Spring教程示例-使用java配置导出Apache excel POI
我正在看这个导出到excel 它看起来很简单,不太复杂。除最后一步外,我能够完成所有步骤。最后一步是XML配置步骤。我使用java annotation config进行项目设置,教程中的示例是xml。如何在“java配置”注释中配置以下与xml相反的Spring教程示例-使用java配置导出Apache excel POI,java,xml,spring,annotations,spring-java-config,Java,Xml,Spring,Annotations,Spring Java Config,我正在看这个导出到excel 它看起来很简单,不太复杂。除最后一步外,我能够完成所有步骤。最后一步是XML配置步骤。我使用java annotation config进行项目设置,教程中的示例是xml。如何在“java配置”注释中配置以下与xml相反的XmlViewResolver?请参阅下面的代码片段 这是我不知道如何配置的部分。我正在尝试以annotation/javaconfig格式获取它 弹簧配置 <beans ...> <bean class="org.s
XmlViewResolver
?请参阅下面的代码片段
这是我不知道如何配置的部分。我正在尝试以annotation/javaconfig格式获取它 弹簧配置
<beans ...>
<bean
class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping" />
<bean class="com.mkyong.common.controller.RevenueReportController" />
<bean class="org.springframework.web.servlet.view.XmlViewResolver">
<property name="location">
<value>/WEB-INF/spring-excel-views.xml</value>
</property>
</bean>
</beans>
/WEB-INF/spring-excel-views.xml
文件:SpringExcel视图.xml
<bean id="ExcelRevenueSummary"
class="com.mkyong.common.view.ExcelRevenueReportView">
</bean>
这就是我的控制器的样子
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "$100,000,000");
revenueData.put("Feb-2010", "$110,000,000");
revenueData.put("Mar-2010", "$130,000,000");
revenueData.put("Apr-2010", "$140,000,000");
revenueData.put("May-2010", "$200,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
return new ModelAndView("ExcelRevenueSummary","revenueData",revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
@控制器
公共类RevenueReportController扩展AbstractController{
私有记录器log=LoggerFactory.getLogger(getClass());
@凌驾
@RequestMapping(value=“/search/exportToExcel”,method=RequestMethod.GET)
受保护的ModelAndView HandlerRequestInternal(HttpServletRequest请求、HttpServletResponse响应)引发异常{
字符串输出=ServletRequestUtils.getStringParameter(请求,“输出”);
//虚拟数据
Map revenueData=new HashMap();
收入数据。认沽期权(“2010年1月”,“100000000美元”);
收入数据。卖出价(“2010年2月”,110000000美元);
收入数据。认沽权(“2010年3月”,“130000000美元”);
收入数据。认沽权(“2010年4月”,“140000000美元”);
收入数据。认沽期权(“2010年5月”,“200000000美元”);
如果(输出==null | |“”.equals(输出)){
//返回正常视图
返回新模型和视图(“RevenueSummary”、“revenueData”、“revenueData”);
}else if(“EXCEL.equals(output.toUpperCase())){
//返回excel视图
返回新模型和视图(“ExcelRevenueSummary”、“revenueData”、“revenueData”);
}否则{
//返回正常视图
返回新模型和视图(“RevenueSummary”、“revenueData”、“revenueData”);
}
}
}
您需要进行以下更改:
创建新的配置类:
@Configuration
@ComponentScan("com.mkyong.common")
public class AppConfig {
@Autowired
ServletContext servletContext;
@Bean
public ViewResolver getXmlViewResolver() {
XmlViewResolver resolver = new XmlViewResolver();
resolver.setLocation(new ServletContextResource(servletContext,
"/WEB-INF/spring-excel-views.xml"));
return resolver;
}
}
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
ExcelRevenueReportView excelRevenueReportView;
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "$100,000,000");
revenueData.put("Feb-2010", "$110,000,000");
revenueData.put("Mar-2010", "$130,000,000");
revenueData.put("Apr-2010", "$140,000,000");
revenueData.put("May-2010", "$200,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
new ModelAndView(excelRevenueReportView, "revenueData", revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
用@controller
@Controller
public class RevenueReportController extends AbstractController {
}
springexcelviews.xml
与您使用的xmlviewsolver
保持相同。它希望bean定义在XML文件中 将我的评论扩展到原始帖子,这里是一个不需要任何xml配置的版本。使用此解决方案,您可以完全消除xml视图。您可以将excel视图定义为另一个bean,并直接在控制器中使用它
配置类:
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
@EnableWebMvc
@ComponentScan(basePackages = { "com.mkyong.common" })
@Configuration
public class AppConfig extends WebMvcConfigurerAdapter {
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
@Bean
public ExcelRevenueReportView excelRevenueReportView() {
return new ExcelRevenueReportView();
}
@Bean
public InternalResourceViewResolver getInternalResourceViewResolver() {
InternalResourceViewResolver resolver = new InternalResourceViewResolver();
resolver.setPrefix("/WEB-INF/");
resolver.setSuffix(".jsp");
return resolver;
}
}
控制器:
@Configuration
@ComponentScan("com.mkyong.common")
public class AppConfig {
@Autowired
ServletContext servletContext;
@Bean
public ViewResolver getXmlViewResolver() {
XmlViewResolver resolver = new XmlViewResolver();
resolver.setLocation(new ServletContextResource(servletContext,
"/WEB-INF/spring-excel-views.xml"));
return resolver;
}
}
@Controller
public class RevenueReportController extends AbstractController{
private Logger log = LoggerFactory.getLogger(getClass());
@Autowired
ExcelRevenueReportView excelRevenueReportView;
@Override
@RequestMapping(value = "/search/exportToExcel", method = RequestMethod.GET)
protected ModelAndView handleRequestInternal(HttpServletRequest request, HttpServletResponse response) throws Exception {
String output = ServletRequestUtils.getStringParameter(request, "output");
//dummy data
Map<String,String> revenueData = new HashMap<String,String>();
revenueData.put("Jan-2010", "$100,000,000");
revenueData.put("Feb-2010", "$110,000,000");
revenueData.put("Mar-2010", "$130,000,000");
revenueData.put("Apr-2010", "$140,000,000");
revenueData.put("May-2010", "$200,000,000");
if(output ==null || "".equals(output)){
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}else if("EXCEL".equals(output.toUpperCase())){
//return excel view
new ModelAndView(excelRevenueReportView, "revenueData", revenueData);
}else{
//return normal view
return new ModelAndView("RevenueSummary","revenueData",revenueData);
}
}
}
@控制器
公共类RevenueReportController扩展AbstractController{
私有记录器log=LoggerFactory.getLogger(getClass());
@自动连线
ExcelRevenueReportView ExcelRevenueReportView;
@凌驾
@RequestMapping(value=“/search/exportToExcel”,method=RequestMethod.GET)
受保护的ModelAndView HandlerRequestInternal(HttpServletRequest请求、HttpServletResponse响应)引发异常{
字符串输出=ServletRequestUtils.getStringParameter(请求,“输出”);
//虚拟数据
Map revenueData=new HashMap();
收入数据。认沽期权(“2010年1月”,“100000000美元”);
收入数据。卖出价(“2010年2月”,110000000美元);
收入数据。认沽权(“2010年3月”,“130000000美元”);
收入数据。认沽权(“2010年4月”,“140000000美元”);
收入数据。认沽期权(“2010年5月”,“200000000美元”);
如果(输出==null | |“”.equals(输出)){
//返回正常视图
返回新模型和视图(“RevenueSummary”、“revenueData”、“revenueData”);
}else if(“EXCEL.equals(output.toUpperCase())){
//返回excel视图
新模型和视图(excelRevenueReportView,“revenueData”,revenueData);
}否则{
//返回正常视图
返回新模型和视图(“RevenueSummary”、“revenueData”、“revenueData”);
}
}
}
您可以使用以下选项@Bean public viewsolver getviewsolver(){xmlviewsolver resolver=new xmlviewsolver();resolver.setLocation(new ClassPathResource(“/WEB-INF/spring excel views.xml”);return resolver;}
我应该把它放在哪里?第二个xml文件spring excel views.xml呢?我添加了一个不需要spring-excel-views.xml的答案。也来看看吧。希望这有帮助。谢谢你的反馈。我想这很接近。然而,我有一个问题。此行resolver.setLocation(新的ServletContextResource(ServletContext,“/WEB-INF/SpringExcel views.xml”)
它不识别ServletContext
说需要一个表达式?我将答案中的代码片段复制粘贴到eclipse中。我找不到任何编译错误。请检查您的代码版本中是否缺少某些内容。我遗漏了上下文感知的@autowiring。配置正在运行。谢谢Mithun@Mithun,看看我的答案,它不需要spring-excel-views.xml。谢谢你的回答。为了帮助我了解更多情况,需要什么扩展WebMVCConfigureAdapter
。@EnableWebMvc实现为您的应用程序提供spring mvc配置支持。它提供了一些默认实现,如果您想覆盖它提供的任何默认值,那么您将扩展WebMVCConfigureAdapter。在您的情况下,您可能不需要。只是我用了一个例子,作为复制粘贴的一部分。