Red Dragonfly

spring boot 使用 jsp

 
  • 2019年 03月25日

现在大多数的 spring-boot 都是用来做 RESTful 的接口，但是今天公司的一个小项目要使用 jsp 做页面，于是……

创建 spring-boot 工程

$ spring init -d=web my-jsp

pom.xml

<packaging>war</packaging>

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

		<!-- Tomcat Embed -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-tomcat</artifactId>
			<scope>provided</scope>
		</dependency>

		<!-- To compile JSP files -->
		<dependency>
			<groupId>org.apache.tomcat.embed</groupId>
			<artifactId>tomcat-embed-jasper</artifactId>
			<!--<scope>provided</scope>-->
		</dependency>

		<!-- JSTL -->
		<dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>jstl</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

启动类

package com.example.myjsp;

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 DemoApplication extends SpringBootServletInitializer {

	@Override
	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
		return application.sources(DemoApplication.class);
	}

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

}

Config 类

package com.example.myjsp.conf;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.JstlView;


@Configuration
@EnableWebMvc
@ComponentScan
public class MvcConfiguration implements WebMvcConfigurer {

    @Override
    public void configureViewResolvers(ViewResolverRegistry registry) {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/jsp/");
        resolver.setSuffix(".jsp");
        resolver.setViewClass(JstlView.class);
        registry.viewResolver(resolver);
    }
}

创建 src/main/webapp/ 目录

里面放入 WEB-INF/jsp 目录和

application.properties

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

Controller 类

package com.example.myjsp.ctrl;

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

import java.util.Date;
import java.util.Map;


@Controller
public class PageController {

    @RequestMapping(value = {"/","/index"})
    public String index(Map<String, Object> model){
        // 直接返回字符串，框架默认会去 spring.view.prefix 目录下的 （index拼接spring.view.suffix）页面
        // 本例为 /WEB-INF/jsp/index.jsp
        model.put("time", new Date());
        model.put("message", "hello 程超");
        return "index";
    }
}

index.jsp 文件

放在 src/main/webapp/WEB-INF/jsp/ 目录中

<%@ page language="java" pageEncoding="UTF-8"%>
<!DOCTYPE HTML>
<html>
<head>

<title>Spring Boot Sample</title>
</head>

<body>
    Time: ${time}
    <br>
    Message: ${message}
</body>
</html>

反正后来好使了。

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