关于java:在-Spring-Boot-2-中致敬-JSP

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新冠病毒???? 还在阻挡全世界重启，但咱们学习脚步不不能停滞，接下来给大家展现一个当初开发中曾经不太罕用的一个小知识点，心愿对大家有所启发。
在平时大家可能用 Spring Boot 2 最多就是开发 RESTful API，可能很少有人在 Spring Boot 2 中用过 JSP 视图，那我就来一起体验下创立一个用 JSP 视图的 Spring Boot 2 利用有如许不便。

咱们能够从 Spring Initializer 获取我的项目框架。

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>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.1.6.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.eprogrammerz.examples.spring</groupId>
   <artifactId>spring-boot-jsp</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>spring-boot-jsp</name>
   <description>Example Spring Boot with JSP view</description>
   <properties>
      <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-tomcat</artifactId>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.apache.tomcat.embed</groupId>
         <artifactId>tomcat-embed-jasper</artifactId>
         <scope>provided</scope>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>
   </dependencies>
   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>
</project>

启动类配置

SpringBootServletInitializer 按传统的 WAR 包部署形式来运行 SpringBootJspApplication。
SpringBootJspApplication.java

package com.eprogrammerz.examples.spring.springbootjsp;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
@SpringBootApplication
public class SpringBootJspApplication extends SpringBootServletInitializer {
   @Override
   protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {return application.sources(SpringBootJspApplication.class);
   }
   public static void main(String[] args) {SpringApplication.run(SpringBootJspApplication.class, args);
   }
}

Resources

application.properties

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

写一个简略映射办法的 Controller

package com.eprogrammerz.examples.spring.springbootjsp.controllers;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
@Controller
public class HelloController {@GetMapping({"/", "/hello"})
    public String hello(Model model, @RequestParam(value="name", required=false, defaultValue="World") String name) {model.addAttribute("name", name);
        return "hello";
    }
}

将上面内容保留成 JSP 文件，放在 src/main/webapp/WEB-INF/jsp/ 目录

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Hello ${name}!</title>
</head>
<body>
    <h2 class="hello-title">Hello ${name}!</h2>
</body>
</html>

在我的项目根门路下应用命令行运行程序。

mvn clean spring-boot:run

拜访 localhost:8080 测试你的程序成果。

本文作者：浩子淘天下
本文链接：http://blog.chuangzhi8.cn/posts/11-spring-boot-2-with-jsp-view.html
版权申明：本文由窗纸儿吧 - 浩子淘天下创作，采纳 CC BY-NC-SA 3.0 协定进行许可。可自在转载、援用，但需署名作者且注明文章出处。如转载至微信公众号，请在文末增加下图作者公众号二维码

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