无法使用Spring Boot呈现JSP [英] Unable to render the JSP using Spring Boot
问题描述
我是春季靴子的新手，我想以一个简单的例子开始，但是似乎没有任何效果 这是我的控制器:
i 'm new in spring boot and i wanted to start with a simple example however nothing seemed to work this my controller:
Package controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class testController {
RequestMapping("view/aboutus")
public String greeting(Model model) {
model.addAttribute("name", "azertyyyy");
return "aboutus"; }}
这是jsp视图:
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags"%>
<!DOCTYPE>
<html> <body> ${name}
<p>hello world</p> </body></html>
我添加了所需的依赖项:
i added the needed dependencies:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
我在application.properties中添加了前缀和后缀
and i added the prefix and suffix in application.properties
当我运行该应用程序时，视图上仅显示hello world，而没有name变量，在这里搜索后，我将视图目录从src/main/webapp/view更改为src/main/resource/templates，但是spring boot无法进行找不到视图了
when i run the application only hello world is shown on the view without the name variable, after searching here i changed the view directory from src/main/webapp/view to src/main/resource/templates but spring boot couldn't find the view anymore
推荐答案
我不确定您是否完全了解我们要以war程序包运行应用程序时必须进行的更改.
I am not sure if you are fully aware of the changes we have to make when we want to run the application as war package.
- 将包装从jar更改为war，并需要依赖项.
- 更改主应用程序类以扩展SpringBootServletInitializer并实现configure()
- 在应用程序属性中定义jsp页面路径
- 将JSP放置在正确的路径中(webapp/WEB-INF/jsp检查屏幕截图)
项目的目录结构
以下是我运行JSP
Following is the code changes I have to done to run the JSP
pom.xml
<?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>com.test</groupId>
<artifactId>Test_Exception_Framework</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<name>Test_Exception_Framework</name>
<description>Project to test ExceptionFramework</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<!-- Need this to compile JSP -->
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.eclipse.jdt.core.compiler</groupId>
<artifactId>ecj</artifactId>
<version>4.6.1</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.jacoco</groupId>
<artifactId>jacoco-maven-plugin</artifactId>
<version>0.7.5.201505241946</version>
<executions>
<execution>
<id>default-prepare-agent</id>
<goals>
<goal>prepare-agent</goal>
</goals>
</execution>
<execution>
<id>default-report</id>
<phase>prepare-package</phase>
<goals>
<goal>report</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
主类
package com.exception;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
@SpringBootApplication
public class SpringBootWebApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(SpringBootWebApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
return application.sources(SpringBootWebApplication.class);
}
}
Rest Controller-重定向到JSP
Rest Controller - which redirects to JSP
package com.exception.controller;
import java.util.Map;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping(method = RequestMethod.GET)
public class TestExceptionController {
@RequestMapping("/")
public String welcome(Map<String, Object> model) {
System.out.println("in controller");
model.put("message", "hello spring boot");
return "welcome";
}
}
application.properties-定义JSP的路径
application.properties - define the path for JSPs
server.port=8085
spring.mvc.view.prefix: /WEB-INF/jsp/
spring.mvc.view.suffix: .jsp
这篇关于无法使用Spring Boot呈现JSP的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
