Spring boot之添加JSP支持

大纲

（1）创建Maven web project；

（2）在pom.xml文件添加依赖

（3）配置application.properties支持jsp

（4）编写测试Controller

（5）编写JSP页面

（6）编写启动类App.java

创建Maven web project

使用Eclipse新建一个Maven Web Project ，项目取名为： spring-boot-jsp

在pom.xml文件添加依赖

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.1.RELEASE</version>
</parent>

<java.version>1.8</java.version>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>

JSTL（JSP Standard Tag Library，JSP标准标签库)是一个不断完善的开放源代码的JSP标签库，是由apache的jakarta小组来维护的。
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>

application.properties配置

添加src/main/resources/application.properties：

# 页面默认前缀目录
spring.mvc.view.prefix=/WEB-INF/jsp/
# 响应页面默认后缀
spring.mvc.view.suffix=.jsp
# 自定义属性，可以在Controller中读取
application.hello=Hello Angel From application

编写测试Controller

@Controller
public class HelloController {
private String hello;

@RequestMapping("/helloJsp")
public String helloJsp(Map<String,Object> map){
System.out.println("HelloController.helloJsp().hello=hello");
map.put("hello", hello);
return "helloJsp";
}
}

编写JSP页面

在 src/main 下面创建 webapp/WEB-INF/jsp 目录用来存放我们的jsp页面：helloJsp.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
helloJsp
<hr>
${hello}

</body>
</html>

编写启动类

@SpringBootApplication
public class App {

public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}

代码如下：

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/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.kfit</groupId>
  <artifactId>spring-boot-jsp</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>spring-boot-jsp Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <!-- spring boot parent节点，引入这个之后，在下面和spring boot相关的就不需要引入版本了; -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
    </parent>
  
  
  
  <properties>
       <!-- 指定一下jdk的版本 ，这里我们使用jdk 1.8 ,默认是1.6 -->
    <java.version>1.8</java.version>
  </properties>
  
  
  <dependencies>
        <!-- web支持: 1、web mvc; 2、restful; 3、jackjson支持; 4、aop ........ -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        
        <!-- servlet 依赖. -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>
        
        <!-- 
                JSTL（JSP Standard Tag Library，JSP标准标签库)是一个不断完善的开放源代码的JSP标签库，是由apache的jakarta小组来维护的。
         -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</artifactId>
        </dependency>
        
        
        <!-- tomcat 的支持.-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.tomcat.embed</groupId>
            <artifactId>tomcat-embed-jasper</artifactId>
            <scope>provided</scope>
        </dependency>
        
        
  </dependencies>
  <build>
    <finalName>spring-boot-jsp</finalName>
  </build>
</project>

Controller类

package com.kfit;

import java.util.Map;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class HelloController {
    
    @RequestMapping("/index")
    public String index(Map<String,Object> map){
        map.put("name", "Andy");
        return "index";
    }
}

配置类

spring.mvc.view.prefix=/WEB-INF/jsp/
 
spring.mvc.view.suffix=.jsp

启动类

package com.kfit;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class App {

    public static void main(String[] args) {
        SpringApplication.run(App.class, args);
    }
}

Spring boot之添加JSP支持

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