Java Spring MVC找不到控制器
我一直在做我的网络项目,一切都很顺利,我做了一些改变(我不知道是什么),然后事情就停止了。以前当我导航到一个URL时,我会得到我创建的页面,现在我得到一个404错误。我已经添加了代码示例 BookController.javaJava Spring MVC找不到控制器,java,spring,maven,spring-mvc,Java,Spring,Maven,Spring Mvc,我一直在做我的网络项目,一切都很顺利,我做了一些改变(我不知道是什么),然后事情就停止了。以前当我导航到一个URL时,我会得到我创建的页面,现在我得到一个404错误。我已经添加了代码示例 BookController.java package com.LibraryManagement.controllers; import java.util.ArrayList; import java.util.List; import javax.validation.Valid; import
package com.LibraryManagement.controllers;
import java.util.ArrayList;
import java.util.List;
import javax.validation.Valid;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.ModelAndView;
import com.LibraryManagement.access.impl.BookDAOImpl;
import com.LibraryManagement.entities.Book;
@Controller
@RequestMapping("/book")
public class BookController {
@Autowired
BookDAOImpl bookDOAImpl;
/**
* Create a new book.
*
*/
@RequestMapping(value = "/addBook", method = RequestMethod.GET)
public ModelAndView addBook() {
return new ModelAndView("newBook", "book", new Book());
}
@RequestMapping(value = "/addBook", method = RequestMethod.POST)
public String displayNewBook(@ModelAttribute("book") @Valid Book book, BindingResult result, ModelMap model) {
if(result.hasErrors()) {
return "newBook";
}
List<Book> books = new ArrayList<Book>();
books.add(book);
model.addAttribute("message", "New book");
model.addAttribute("books", books);
try {
bookDOAImpl.createBook(book.getTitle(), book.getAuthor(), book.getPublisher(), book.getPublicationDate(), book.getIsbn(), book.isAvailable());
} catch (Exception e) {
e.printStackTrace();
}
return "displayBooks";
}
/**
* Delete a book given the ID of the book.
*
*/
@RequestMapping(value = "/deleteBookId", method = RequestMethod.GET)
public ModelAndView deleteBookId() {
return new ModelAndView("deleteBookId", "book", new Book());
}
@RequestMapping(value = "/deleteBookId", method = RequestMethod.POST)
public String displayDeletedMemberId(@ModelAttribute("book") Book book, ModelMap model) {
List<Book> books = new ArrayList<Book>();
books.add(book);
model.addAttribute("message", "Delete book with id "+book.getId());
try {
bookDOAImpl.deleteBook(book.getId());
} catch (Exception e) {
e.printStackTrace();
}
return "displayBooks";
}
/**
* Delete a book given the name of the book.
*
*/
@RequestMapping(value = "/deleteBookTitle", method = RequestMethod.GET)
public ModelAndView deleteBookTitle() {
return new ModelAndView("deleteBookTitle", "book", new Book());
}
@RequestMapping(value = "/deleteBookTitle", method = RequestMethod.POST)
public String displayDeletedMemberTitle(@ModelAttribute("book") Book book, ModelMap model) {
List<Book> books = new ArrayList<Book>();
books.add(book);
model.addAttribute("message", "Delete book with title "+ book.getTitle());
try {
bookDOAImpl.deleteBook(book.getTitle());
} catch (Exception e) {
e.printStackTrace();
}
return "displayBooks";
}
/**
* List all books.
*
*/
@RequestMapping(value="/all", method=RequestMethod.GET)
public String displayAllMembers(ModelMap model){
List<Book> books = bookDOAImpl.getAllBooks();
model.addAttribute("message", "A list of all the books");
model.addAttribute("books", books);
return "displayBooks";
}
/**
* List the books on loan given the member ID.
*
*/
@RequestMapping(value="/loanedBooks/{memberId}", method=RequestMethod.GET)
public String displayLoanedBooks(@PathVariable String memberId, ModelMap model){
List<Book> books = bookDOAImpl.getLoanedBooks(Integer.parseInt(memberId));
model.addAttribute("message", "List the books on loan by "+memberId);
model.addAttribute("books", books);
return "displayBooks";
}
/**
* List all books on loan by all members.
*
*/
@RequestMapping(value="/loanedBooks", method=RequestMethod.GET)
public String displayLoanedBooks(ModelMap model){
List<Book> books = bookDOAImpl. getLoanedBooks();
model.addAttribute("message", "List the books on loan");
model.addAttribute("books", books);
return "displayBooks";
}
}
package com.LibraryManagement.controllers;
导入java.util.ArrayList;
导入java.util.List;
导入javax.validation.Valid;
导入org.springframework.beans.factory.annotation.Autowired;
导入org.springframework.stereotype.Controller;
导入org.springframework.ui.ModelMap;
导入org.springframework.validation.BindingResult;
导入org.springframework.web.bind.annotation.ModelAttribute;
导入org.springframework.web.bind.annotation.PathVariable;
导入org.springframework.web.bind.annotation.RequestMapping;
导入org.springframework.web.bind.annotation.RequestMethod;
导入org.springframework.web.servlet.ModelAndView;
导入com.LibraryManagement.access.impl.BookDAOImpl;
导入com.LibraryManagement.entities.Book;
@控制器
@请求映射(“/book”)
公共类图书管理员{
@自动连线
BookDAOImpl bookDOAImpl;
/**
*创建一本新书。
*
*/
@RequestMapping(value=“/addBook”,method=RequestMethod.GET)
公共模型和视图addBook(){
返回新的model和view(“newBook”、“book”、newBook());
}
@RequestMapping(value=“/addBook”,method=RequestMethod.POST)
公共字符串displayNewBook(@modeldattribute(“book”)@有效的book book,BindingResult,ModelMap model){
if(result.hasErrors()){
返回“newBook”;
}
List books=new ArrayList();
图书。添加(图书);
model.addAttribute(“消息”、“新书”);
model.addAttribute(“books”,books);
试一试{
BookDoImpl.createBook(book.getTitle()、book.getAuthor()、book.getPublisher()、book.getPublicationDate()、book.getIsbn()、book.isAvailable());
}捕获(例外e){
e、 printStackTrace();
}
返回“显示本”;
}
/**
*根据图书ID删除图书。
*
*/
@RequestMapping(value=“/deleteBookId”,method=RequestMethod.GET)
公共模型和视图deleteBookId(){
返回新模型和视图(“deleteBookId”、“book”、new book());
}
@RequestMapping(value=“/deleteBookId”,method=RequestMethod.POST)
公共字符串displayDeletedMemberId(@ModelAttribute(“book”)book book,ModelMap model){
List books=new ArrayList();
图书。添加(图书);
model.addAttribute(“message”,“Delete book with id”+book.getId());
试一试{
bookDOAImpl.deleteBook(book.getId());
}捕获(例外e){
e、 printStackTrace();
}
返回“显示本”;
}
/**
*删除给定图书名称的图书。
*
*/
@RequestMapping(value=“/deleteBookTitle”,method=RequestMethod.GET)
公共模型和视图deleteBookTitle(){
返回新模型和视图(“deleteBookTitle”、“book”、new book());
}
@RequestMapping(value=“/deleteBookTitle”,method=RequestMethod.POST)
公共字符串displayDeletedMemberTitle(@ModelAttribute(“book”)book book,ModelMap model){
List books=new ArrayList();
图书。添加(图书);
model.addAttribute(“message”,“Delete book with title”+book.getTitle());
试一试{
bookDOAImpl.deleteBook(book.getTitle());
}捕获(例外e){
e、 printStackTrace();
}
返回“显示本”;
}
/**
*列出所有的书。
*
*/
@RequestMapping(value=“/all”,method=RequestMethod.GET)
公共字符串displayAllMembers(ModelMap模型){
List books=bookDOAImpl.getAllBooks();
addAttribute(“消息”,“所有书籍的列表”);
model.addAttribute(“books”,books);
返回“显示本”;
}
/**
*根据会员ID列出借出的图书。
*
*/
@RequestMapping(value=“/loanedBooks/{memberId}”,method=RequestMethod.GET)
公共字符串DisplayLoandBooks(@PathVariable String memberId,ModelMap model){
List books=bookDOAImpl.getLoanedBooks(Integer.parseInt(memberId));
model.addAttribute(“消息”,“按“+memberId”列出借出的图书);
model.addAttribute(“books”,books);
返回“显示本”;
}
/**
*列出所有成员借出的所有书籍。
*
*/
@RequestMapping(value=“/loanedBooks”,method=RequestMethod.GET)
公共字符串displayLoanedBooks(ModelMap模型){
List books=bookDOAImpl.getloandbooks();
model.addAttribute(“消息”,“列出借出的书籍”);
model.addAttribute(“books”,books);
返回“显示本”;
}
}
web.xml
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>mvc-dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>mvc-dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-dispatcher-servlet.xml, /WEB-INF/application-context.xml</param-value>
</context-param>
</web-app>
mvc调度器
org.springframework.web.servlet.DispatcherServlet
1.
mvc调度器
/
org.springframework.web.context.ContextLoaderListener
上下文配置位置
/WEB-INF/mvc-dispatcher-servlet.xml,/WEB-INF/application-context.xml
application-context.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd"
default-autowire="byName">
<context:annotation-config/>
<context:component-scan base-package="com.LibraryManagement.*" />
<context:property-placeholder location="classpath:prop.properties"/>
</beans>
mvc-dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd" >
<context:component-scan base-package="com.LibraryManagement.*" />
<mvc:annotation-driven validator="validator"/>
<bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean"></bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix">
<value>/WEB-INF/pages/</value>
</property>
<property name="suffix">
<value>.jsp</value>
</property>
</bean>
</beans>
/WEB-INF/pages/
.jsp
pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.thehit</groupId>
<artifactId>WebLibraryManagement</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>WebLibraryManagement Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<jdk.version>1.7</jdk.version>
<org.springframework.version>4.0.0.RELEASE</org.springframework.version>
</properties>
<dependencies>
<dependency>
<groupId>org.dbunit</groupId>
<artifactId>dbunit</artifactId>
<version>2.4.9</version>
</dependency>
<dependency>
<groupId>com.github.springtestdbunit</groupId>
<artifactId>spring-test-dbunit</artifactId>
<version>1.1.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.5.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.0.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.6</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.3</version>
</dependency>
<!--
Core utilities used by other modules.
Define this if you use Spring Utility APIs (org.springframework.core.*/org.springframework.util.*)
-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--
Expression Language (depends on spring-core)
Define this if you use Spring Expression APIs (org.springframework.expression.*)
-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--
Bean Factory and JavaBeans utilities (depends on spring-core)
Define this if you use Spring Bean APIs (org.springframework.beans.*)
-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<!--
Application Context (depends on spring-core, spring-expression, spring-aop, spring-beans)
This is the central artifact for Spring's Dependency Injection Container and is generally always defined
-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.0.1.Final</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.12</version>
</dependency>
</dependencies>
<build>
<finalName>WebLibraryManagement</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
<configuration>
<source>${jdk.version}</source>
<target>${jdk.version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
4.0.0
com.thehit
网络图书馆管理
战争
1.0-快照
WebLibraryManagement Maven Webapp
http://maven.apache.org
1.7
4.0.0.0发布
org.dbunit
单元测试
2.4.9
com.github.springtestdbunit
弹簧试验装置
1.1.0
测验
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/mvc-dispatcher-servlet.xml, /WEB-INF/application-context.xml</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/application-context.xml</param-value>
</context-param>