Java org.springframework.web.servlet.DispatcherServlet.initServletBean上下文初始化失败
我将此用于SpringMVC示例，但我使用PostgreSQL 我也有很多例外，我搜索过，但没有任何帮助 这是一个例外：Java org.springframework.web.servlet.DispatcherServlet.initServletBean上下文初始化失败,java,spring,postgresql,maven,spring-mvc,Java,Spring,Postgresql,Maven,Spring Mvc,我将此用于SpringMVC示例，但我使用PostgreSQL 我也有很多例外，我搜索过，但没有任何帮助 这是一个例外： SEVERE [RMI TCP Connection(3)-127.0.0.1] org.springframework.web.servlet.DispatcherServlet.initServletBean Context initialization failed org.springframework.beans.factory.BeanCreationE
SEVERE [RMI TCP Connection(3)-127.0.0.1] org.springframework.web.servlet.DispatcherServlet.initServletBean Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'homeController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private net.codejava.spring.dao.ContactDAO net.codejava.spring.controller.HomeController.contactDAO; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getContactDAO' defined in class path resource [net/codejava/spring/config/MvcConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public net.codejava.spring.dao.ContactDAO net.codejava.spring.config.MvcConfiguration.getContactDAO()] threw exception; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'getDataSource' defined in class path resource [net/codejava/spring/config/MvcConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public javax.sql.DataSource net.codejava.spring.config.MvcConfiguration.getDataSource()] threw exception; nested exception is java.lang.IllegalStateException: Could not load JDBC driver class [org.postgresql.Driver]
package net.codejava.spring.config;
import javax.sql.DataSource;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.dao.ContactDAOImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.datasource.DriverManagerDataSource;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@Configuration
@ComponentScan(basePackages="net.codejava.spring")
@EnableWebMvc
public class MvcConfiguration extends WebMvcConfigurerAdapter{
@Bean
public ViewResolver getViewResolver(){
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
@Override
public void addResourceHandlers(ResourceHandlerRegistry registry) {
registry.addResourceHandler("/resources/**").addResourceLocations("/resources/");
}
@Bean
public DataSource getDataSource() {
DriverManagerDataSource dataSource = new DriverManagerDataSource();
dataSource.setDriverClassName("org.postgresql.Driver");
dataSource.setUrl("jdbc:postgresql://localhost:5432/contactdb");
dataSource.setUsername("postgres");
dataSource.setPassword("3517571");
return dataSource;
}
@Bean
public ContactDAO getContactDAO() {
return new ContactDAOImpl(getDataSource());
}
}
package net.codejava.spring.controller;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* This controller routes accesses to the application to the appropriate
* hanlder methods.
* @author www.codejava.net
*
*/
@Controller
public class HomeController {
@Autowired
private ContactDAO contactDAO;
@RequestMapping(value="/")
public ModelAndView listContact(ModelAndView model) throws IOException{
List<Contact> listContact = contactDAO.list();
model.addObject("listContact", listContact);
model.setViewName("home");
return model;
}
@RequestMapping(value = "/newContact", method = RequestMethod.GET)
public ModelAndView newContact(ModelAndView model) {
Contact newContact = new Contact();
model.addObject("contact", newContact);
model.setViewName("ContactForm");
return model;
}
@RequestMapping(value = "/saveContact", method = RequestMethod.POST)
public ModelAndView saveContact(@ModelAttribute Contact contact) {
contactDAO.saveOrUpdate(contact);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
public ModelAndView deleteContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
contactDAO.delete(contactId);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/editContact", method = RequestMethod.GET)
public ModelAndView editContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
Contact contact = contactDAO.get(contactId);
ModelAndView model = new ModelAndView("ContactForm");
model.addObject("contact", contact);
return model;
}
}
package net.codejava.spring.dao;
import java.util.List;
import net.codejava.spring.model.Contact;
/**
* Defines DAO operations for the contact model.
* @author www.codejava.net
*
*/
public interface ContactDAO {
public void saveOrUpdate(Contact contact);
public void delete(int contactId);
public Contact get(int contactId);
public List<Contact> list();
}
package net.codejava.spring.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import net.codejava.spring.model.Contact;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
/**
* An implementation of the ContactDAO interface.
* @author www.codejava.net
*
*/
public class ContactDAOImpl implements ContactDAO {
private JdbcTemplate jdbcTemplate;
public ContactDAOImpl(DataSource dataSource) {
jdbcTemplate = new JdbcTemplate(dataSource);
}
@Override
public void saveOrUpdate(Contact contact) {
if (contact.getId() > 0) {
// update
String sql = "UPDATE contact SET name=?, email=?, address=?, "
+ "telephone=? WHERE contact_id=?";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone(), contact.getId());
} else {
// insert
String sql = "INSERT INTO contact (name, email, address, telephone)"
+ " VALUES (?, ?, ?, ?)";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone());
}
}
@Override
public void delete(int contactId) {
String sql = "DELETE FROM contact WHERE contact_id=?";
jdbcTemplate.update(sql, contactId);
}
@Override
public List<Contact> list() {
String sql = "SELECT * FROM contact";
List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() {
@Override
public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
Contact aContact = new Contact();
aContact.setId(rs.getInt("contact_id"));
aContact.setName(rs.getString("name"));
aContact.setEmail(rs.getString("email"));
aContact.setAddress(rs.getString("address"));
aContact.setTelephone(rs.getString("telephone"));
return aContact;
}
});
return listContact;
}
@Override
public Contact get(int contactId) {
String sql = "SELECT * FROM contact WHERE contact_id=" + contactId;
return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() {
@Override
public Contact extractData(ResultSet rs) throws SQLException,
DataAccessException {
if (rs.next()) {
Contact contact = new Contact();
contact.setId(rs.getInt("contact_id"));
contact.setName(rs.getString("name"));
contact.setEmail(rs.getString("email"));
contact.setAddress(rs.getString("address"));
contact.setTelephone(rs.getString("telephone"));
return contact;
}
return null;
}
});
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.codejava.spring</groupId>
<artifactId>SpringMvcJdbcTemplate</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>SpringMvcJdbcTemplate</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
<spring.version>4.0.3.RELEASE</spring.version>
<cglib.version>2.2.2</cglib.version>
</properties>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
<!-- Spring core & mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- CGLib for @Configuration -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>${cglib.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Servlet Spec -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>SpringMvcJdbcTemplate</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
包net.codejava.spring.controller；
导入java.io.IOException；
导入java.util.List；
导入javax.servlet.http.HttpServletRequest；
导入net.codejava.spring.dao.ContactDAO；
导入net.codejava.spring.model.Contact；
导入org.springframework.beans.factory.annotation.Autowired；
导入org.springframework.stereotype.Controller；
导入org.springframework.web.bind.annotation.ModelAttribute；
导入org.springframework.web.bind.annotation.RequestMapping；
导入org.springframework.web.bind.annotation.RequestMethod；
导入org.springframework.web.servlet.ModelAndView；
/**
*此控制器将对应用程序的访问路由到相应的
*汉尔德方法。
*@author www.codejava.net
*
*/
@控制器
公共类家庭控制器{
@自动连线
私人联系人；
@请求映射（value=“/”）
公共模型和视图列表联系人（模型和视图模型）引发IOException{
List listContact=contactDAO.List（）；
model.addObject（“listContact”，listContact）；
model.setViewName（“主页”）；
收益模型；
}
@RequestMapping（value=“/newContact”，method=RequestMethod.GET）
公共模型和视图新联系人（模型和视图模型）{
联系人newContact=新联系人（）；
model.addObject（“联系人”，newContact）；
model.setViewName（“ContactForm”）；
收益模型；
}
@RequestMapping（value=“/saveContact”，method=RequestMethod.POST）
public ModelAndView saveContact（@modeldattribute Contact）{
contactDAO.saveOrUpdate（contact）；
返回新的ModelAndView（“重定向：/”）；
}
@RequestMapping（value=“/deleteContact”，method=RequestMethod.GET）
公共模型和视图删除联系人（HttpServletRequest）{
int contactId=Integer.parseInt（request.getParameter（“id”）；
contactDAO.delete（contactId）；
返回新的ModelAndView（“重定向：/”）；
}
@RequestMapping（value=“/editContact”，method=RequestMethod.GET）
公共模型和视图编辑联系人（HttpServletRequest）{
int contactId=Integer.parseInt（request.getParameter（“id”）；
Contact Contact=contactDAO.get（contactId）；
ModelAndView模型=新的ModelAndView（“ContactForm”）；
model.addObject（“contact”，contact）；
收益模型；
}
}
package net.codejava.spring.controller;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* This controller routes accesses to the application to the appropriate
* hanlder methods.
* @author www.codejava.net
*
*/
@Controller
public class HomeController {
@Autowired
private ContactDAO contactDAO;
@RequestMapping(value="/")
public ModelAndView listContact(ModelAndView model) throws IOException{
List<Contact> listContact = contactDAO.list();
model.addObject("listContact", listContact);
model.setViewName("home");
return model;
}
@RequestMapping(value = "/newContact", method = RequestMethod.GET)
public ModelAndView newContact(ModelAndView model) {
Contact newContact = new Contact();
model.addObject("contact", newContact);
model.setViewName("ContactForm");
return model;
}
@RequestMapping(value = "/saveContact", method = RequestMethod.POST)
public ModelAndView saveContact(@ModelAttribute Contact contact) {
contactDAO.saveOrUpdate(contact);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
public ModelAndView deleteContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
contactDAO.delete(contactId);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/editContact", method = RequestMethod.GET)
public ModelAndView editContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
Contact contact = contactDAO.get(contactId);
ModelAndView model = new ModelAndView("ContactForm");
model.addObject("contact", contact);
return model;
}
}
package net.codejava.spring.dao;
import java.util.List;
import net.codejava.spring.model.Contact;
/**
* Defines DAO operations for the contact model.
* @author www.codejava.net
*
*/
public interface ContactDAO {
public void saveOrUpdate(Contact contact);
public void delete(int contactId);
public Contact get(int contactId);
public List<Contact> list();
}
package net.codejava.spring.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import net.codejava.spring.model.Contact;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
/**
* An implementation of the ContactDAO interface.
* @author www.codejava.net
*
*/
public class ContactDAOImpl implements ContactDAO {
private JdbcTemplate jdbcTemplate;
public ContactDAOImpl(DataSource dataSource) {
jdbcTemplate = new JdbcTemplate(dataSource);
}
@Override
public void saveOrUpdate(Contact contact) {
if (contact.getId() > 0) {
// update
String sql = "UPDATE contact SET name=?, email=?, address=?, "
+ "telephone=? WHERE contact_id=?";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone(), contact.getId());
} else {
// insert
String sql = "INSERT INTO contact (name, email, address, telephone)"
+ " VALUES (?, ?, ?, ?)";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone());
}
}
@Override
public void delete(int contactId) {
String sql = "DELETE FROM contact WHERE contact_id=?";
jdbcTemplate.update(sql, contactId);
}
@Override
public List<Contact> list() {
String sql = "SELECT * FROM contact";
List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() {
@Override
public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
Contact aContact = new Contact();
aContact.setId(rs.getInt("contact_id"));
aContact.setName(rs.getString("name"));
aContact.setEmail(rs.getString("email"));
aContact.setAddress(rs.getString("address"));
aContact.setTelephone(rs.getString("telephone"));
return aContact;
}
});
return listContact;
}
@Override
public Contact get(int contactId) {
String sql = "SELECT * FROM contact WHERE contact_id=" + contactId;
return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() {
@Override
public Contact extractData(ResultSet rs) throws SQLException,
DataAccessException {
if (rs.next()) {
Contact contact = new Contact();
contact.setId(rs.getInt("contact_id"));
contact.setName(rs.getString("name"));
contact.setEmail(rs.getString("email"));
contact.setAddress(rs.getString("address"));
contact.setTelephone(rs.getString("telephone"));
return contact;
}
return null;
}
});
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.codejava.spring</groupId>
<artifactId>SpringMvcJdbcTemplate</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>SpringMvcJdbcTemplate</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
<spring.version>4.0.3.RELEASE</spring.version>
<cglib.version>2.2.2</cglib.version>
</properties>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
<!-- Spring core & mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- CGLib for @Configuration -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>${cglib.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Servlet Spec -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>SpringMvcJdbcTemplate</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
包net.codejava.spring.dao；
导入java.util.List；
导入net.codejava.spring.model.Contact；
/**
*定义联系人模型的DAO操作。
*@author www.codejava.net
*
*/
公共接口ContactDAO{
公共作废保存或更新（联系方式）；
公共无效删除（int contactId）；
公共联系人get（int contactId）；
公共列表（）；
}
package net.codejava.spring.controller;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import net.codejava.spring.dao.ContactDAO;
import net.codejava.spring.model.Contact;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
/**
* This controller routes accesses to the application to the appropriate
* hanlder methods.
* @author www.codejava.net
*
*/
@Controller
public class HomeController {
@Autowired
private ContactDAO contactDAO;
@RequestMapping(value="/")
public ModelAndView listContact(ModelAndView model) throws IOException{
List<Contact> listContact = contactDAO.list();
model.addObject("listContact", listContact);
model.setViewName("home");
return model;
}
@RequestMapping(value = "/newContact", method = RequestMethod.GET)
public ModelAndView newContact(ModelAndView model) {
Contact newContact = new Contact();
model.addObject("contact", newContact);
model.setViewName("ContactForm");
return model;
}
@RequestMapping(value = "/saveContact", method = RequestMethod.POST)
public ModelAndView saveContact(@ModelAttribute Contact contact) {
contactDAO.saveOrUpdate(contact);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/deleteContact", method = RequestMethod.GET)
public ModelAndView deleteContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
contactDAO.delete(contactId);
return new ModelAndView("redirect:/");
}
@RequestMapping(value = "/editContact", method = RequestMethod.GET)
public ModelAndView editContact(HttpServletRequest request) {
int contactId = Integer.parseInt(request.getParameter("id"));
Contact contact = contactDAO.get(contactId);
ModelAndView model = new ModelAndView("ContactForm");
model.addObject("contact", contact);
return model;
}
}
package net.codejava.spring.dao;
import java.util.List;
import net.codejava.spring.model.Contact;
/**
* Defines DAO operations for the contact model.
* @author www.codejava.net
*
*/
public interface ContactDAO {
public void saveOrUpdate(Contact contact);
public void delete(int contactId);
public Contact get(int contactId);
public List<Contact> list();
}
package net.codejava.spring.dao;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import net.codejava.spring.model.Contact;
import org.springframework.dao.DataAccessException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.ResultSetExtractor;
import org.springframework.jdbc.core.RowMapper;
/**
* An implementation of the ContactDAO interface.
* @author www.codejava.net
*
*/
public class ContactDAOImpl implements ContactDAO {
private JdbcTemplate jdbcTemplate;
public ContactDAOImpl(DataSource dataSource) {
jdbcTemplate = new JdbcTemplate(dataSource);
}
@Override
public void saveOrUpdate(Contact contact) {
if (contact.getId() > 0) {
// update
String sql = "UPDATE contact SET name=?, email=?, address=?, "
+ "telephone=? WHERE contact_id=?";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone(), contact.getId());
} else {
// insert
String sql = "INSERT INTO contact (name, email, address, telephone)"
+ " VALUES (?, ?, ?, ?)";
jdbcTemplate.update(sql, contact.getName(), contact.getEmail(),
contact.getAddress(), contact.getTelephone());
}
}
@Override
public void delete(int contactId) {
String sql = "DELETE FROM contact WHERE contact_id=?";
jdbcTemplate.update(sql, contactId);
}
@Override
public List<Contact> list() {
String sql = "SELECT * FROM contact";
List<Contact> listContact = jdbcTemplate.query(sql, new RowMapper<Contact>() {
@Override
public Contact mapRow(ResultSet rs, int rowNum) throws SQLException {
Contact aContact = new Contact();
aContact.setId(rs.getInt("contact_id"));
aContact.setName(rs.getString("name"));
aContact.setEmail(rs.getString("email"));
aContact.setAddress(rs.getString("address"));
aContact.setTelephone(rs.getString("telephone"));
return aContact;
}
});
return listContact;
}
@Override
public Contact get(int contactId) {
String sql = "SELECT * FROM contact WHERE contact_id=" + contactId;
return jdbcTemplate.query(sql, new ResultSetExtractor<Contact>() {
@Override
public Contact extractData(ResultSet rs) throws SQLException,
DataAccessException {
if (rs.next()) {
Contact contact = new Contact();
contact.setId(rs.getInt("contact_id"));
contact.setName(rs.getString("name"));
contact.setEmail(rs.getString("email"));
contact.setAddress(rs.getString("address"));
contact.setTelephone(rs.getString("telephone"));
return contact;
}
return null;
}
});
}
}
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>net.codejava.spring</groupId>
<artifactId>SpringMvcJdbcTemplate</artifactId>
<version>1.0</version>
<packaging>war</packaging>
<name>SpringMvcJdbcTemplate</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
<spring.version>4.0.3.RELEASE</spring.version>
<cglib.version>2.2.2</cglib.version>
</properties>
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
<!-- Spring core & mvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
<!-- CGLib for @Configuration -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>${cglib.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Servlet Spec -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>javax.servlet.jsp-api</artifactId>
<version>2.3.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
</dependencies>
<build>
<finalName>SpringMvcJdbcTemplate</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.0.2</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
包net.codejava.spring.dao；
导入java.sql.ResultSet；
导入java.sql.SQLException；
导入java.util.List；
导入javax.sql.DataSource；
导入net.codejava.spring.model.Contact；
导入org.springframework.dao.DataAccessException；
导入org.springframework.jdbc.core.jdbc模板；
导入org.springframework.jdbc.core.ResultSetExtractor；
导入org.springframework.jdbc.core.RowMapper；
/**
*ContactDAO接口的实现。
*@author www.codejava.net
*
*/
公共类ContactDAOImpl实现ContactDAO{
私有JdbcTemplate JdbcTemplate；
公共联系人DAOIMP（数据源数据源）{
jdbcTemplate=新的jdbcTemplate（数据源）；
}
@凌驾
公共作废保存或更新（联系人）{
如果（contact.getId（）>0）{
//更新
String sql=“更新联系人集名称=？，电子邮件=？，地址=？，”
+“电话=？其中联系人_id=？”；
jdbcTemplate.update（sql，contact.getName（），contact.getEmail（），
contact.getAddress（），contact.getTelephone（），contact.getId（））；
}否则{
//插入
String sql=“插入联系人（姓名、电子邮件、地址、电话）”
+“值（？，？，？）”；
jdbcTemplate.update（sql，contact.getName（），contact.getEmail（），
contact.getAddress（），contact.getTelephone（））；
}
}
@凌驾
公共无效删除（int联系人ID）{
String sql=“从联系人中删除，其中联系人_id=？”；
更新（sql，contactId）；
}
@凌驾
公开名单（）{
String sql=“从联系人中选择*”；
List listContact=jdbcTemplate.query（sql，新的行映射器（）{
@凌驾
公共联系人mapRow（ResultSet rs，int rowNum）引发SQLException{
触点A触点=新触点（）；
aContact.setId（rs.getInt（“contact_id”）；
aContact.setName（rs.getString（“name”）；
aContact.setEmail（rs.getString（“email”）；
aContact.setAddress（rs.getString（“地址”）；
一个Contact.setTelephone（rs.getString（“电话”））；
返回一个联系人；
}
});
返回列表联系人；
}
@凌驾
公共联系人获取（int联系人ID）{
String sql=“从联系人中选择*，其中contact_id=“+contactId；
返回jdbcTemplate.query（sql，newresultsetextractor（）{
@凌驾
公共联系人提取数据（结果集rs）引发SQLException，
DataAccessException{
如果（rs.next（））{
触点=新触点（）；
联系方式。