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服务器之家 - 编程语言 - JAVA教程 - 详解Spring Boot 添加JSP支持

详解Spring Boot 添加JSP支持

2020-09-24 16:02爱笑的T_T JAVA教程

本篇文章主要介绍了详解Spring Boot 添加JSP支持,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

大体步骤:

(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Application.Java

1,FreeMarker

2,Groovy

3,Thymeleaf (spring 官网使用这个)

4,Velocity

5,JSP (貌似Spring Boot官方不推荐,STS创建的项目会在src/main/resources 下有个templates 目录,这里就是让我们放模版文件的,然后并没有生成诸如 SpringMVC 中的webapp目录)

不过本文还是选择大家都熟悉的JSP来举例,因为使用JSP与默认支持的模版需要特殊处理,所以拿来举例更好。

(1)创建Maven web project

使用Eclipse新建一个Maven Web Project ,项目取名为:

spring-boot-jsp

(2)在pom.xml文件添加依赖

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<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.example</groupId>
  <artifactId>spring-boot-jsp</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
 
  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
 
  <!-- Inherit defaults from Spring Boot -->
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.0.RELEASE</version>
  </parent>
  <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。JSTL只能运行在支持JSP1.2和Servlet2.3规范的容器上,如tomcat 
      4.x。在JSP 2.0中也是作为标准支持的。 不然报异常信息: javax.servlet.ServletException: Circular 
      view path [/helloJsp]: would dispatch back to the current handler URL [/helloJsp] 
      again. Check your ViewResolver setup! (Hint: This may be the result of an 
      unspecified view, due to default view name generation.) -->
    <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>
    <plugins>
      <plugin>
       <artifactId>maven-compiler-plugin</artifactId>
       <configuration>
         <source>1.8</source>
         <target>1.8</target>
       </configuration>
      </plugin>
    </plugins>
  </build>
</project>

(3)application.properties配置

上面说了spring-boot 不推荐JSP,想使用JSP需要配置application.properties。

添加src/main/resources/application.properties内容:

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# 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

(4)编写测试Controller

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package com.example.jsp.controller;
 
import java.util.Map;
 
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
 
@Controller
public class HelloController {
  //从application中读取配置,如取不到默认值为hello jack
  @Value("${application.hello:hello jack}")
  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";
  }
}

(5)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

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<%@ 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>

6)编写启动类

编写Application.java启动类:

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package com.example;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.web.support.SpringBootServletInitializer;
//import org.springframework.boot.context.web.SpringBootServletInitializer;
 
 
@SpringBootApplication
public class Application extends SpringBootServletInitializer {
 
  public static void main(String[] args){
    SpringApplication.run(Application.class, args);
  }
}

 右键Run As  Java Application访问:http://127.0.0.1:8080/helloJsp 可以访问到:

helloJsp

Hello Angel From application

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。

原文链接:http://blog.csdn.net/u014695188/article/details/52343898

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