SpringBoot——02WEB

最新推荐文章于 2024-12-01 16:39:26 发布

转载最新推荐文章于 2024-12-01 16:39:26 发布 · 117 阅读

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原文链接：https://my.oschina.net/u/3975109/blog/2996953

本文详细介绍了SpringBoot中WEB模块的使用，包括如何通过@Controller和@ResponseBody返回JSON数据，以及使用Freemarker进行页面跳转的方法。同时，文章还提供了具体的代码示例，展示了不同类型的JSON数据返回方式以及页面配置的细节。

SpringBoot之WEB（跳转到一个页面或者获取一个Json数据）

模块结构：

1.返回json两种方式
@Controller+@ResponseBody

@Controller
@RequestMapping("/json")
public class JsonController {
    @RequestMapping("/str")
    @ResponseBody
    public String json1(){
        return "json001";
    }
    @RequestMapping("/obj")
    @ResponseBody
    public Person json2(){
        return new Person(1L,"json2",new Date());
    }
    @RequestMapping("/list")
    @ResponseBody
    public List<Person> json3(){
        return Arrays.asList(new Person(1L,"json2",new Date()),new Person(2L,"json2",new Date()),new Person(3L,"json2",new Date()));
    }
}

@RestController=@Controller+@ResponseBody

@RestController
@RequestMapping("/json2")
public class JsonController2 {
    @RequestMapping("/str")
    public String json1(){
        return "json001";
    }
    @RequestMapping("/obj")
    public Person json2(){
        return new Person(1L,"json2",new Date());
    }
    @RequestMapping("/list")
    public List<Person> json3(){
        return Arrays.asList(new Person(1L,"json2",new Date()),new Person(2L,"json2",new Date()),new Person(3L,"json2",new Date()));
    }
}

2.页面跳转

官方推荐使用模板引擎,不推荐jsp。这里我用的FreeeMarker

导包

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

配置：application.properties

# FreeeMarker 模板引擎配置
spring.freemarker.allow-request-override=false
spring.freemarker.cache=false
spring.freemarker.check-template-location=true
spring.freemarker.charset=UTF-8
spring.freemarker.content-type=text/html
spring.freemarker.expose-request-attributes=false
spring.freemarker.expose-session-attributes=false
spring.freemarker.expose-spring-macro-helpers=false
#spring.freemarker.prefix=
#spring.freemarker.request-context-attribute=
#spring.freemarker.settings.*=
#spring.freemarker.suffix=.ftl
#spring.freemarker.template-loader-path=classpath:/templates/ #comma-separated list
#spring.freemarker.view-names= # whitelist of view names that can be resolved

Controller

@Controller
public class IndexController {
    @RequestMapping("/index")
    public String json1(Model model){
        model.addAttribute("msg","springboot");
        return "index";
    }
    @RequestMapping("/index2")
    @ResponseBody
    public String json2(Model model){
        model.addAttribute("msg","springboot");
        return "index";
    }
}

FreeeMarker模板

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org"
             xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
    <title>Hello World!</title>
</head>
<body>
<h1><span style="color: red">${msg}</span> </h1>
</body>
</html>

springboot----web结束

转载于:https://my.oschina.net/u/3975109/blog/2996953