【Java】SpringMVC参数接收（二）：JSON、URI、文件

1、获取JSON参数

@RequestMapping("/hello")
@RestController
public class HelloSpring {@RequestMapping("/t10")public String t10(@RequestBody UserInfo userInfo){return userInfo.toString();}
}

2、获取URI中的参数

（1）获取单个参数

@RequestMapping("/hello")
@RestController
public class HelloSpring {@RequestMapping("/t11/{articleId}")public String t11(@PathVariable Integer articleId){return "articleId: " + articleId;}
}

（2）获取多个参数

@RequestMapping("/hello")
@RestController
public class HelloSpring {@RequestMapping("/t12/{name}/{age}")public String t12(@PathVariable("name") String username,@PathVariable Integer age){return "name: " + username + "; age: " + age;}}

3、获取文件

@RequestMapping("/hello")
@RestController
public class HelloSpring {@RequestMapping("/f1")public String f1(@RequestPart MultipartFile file){return "获取文件的名字为：" + file.getOriginalFilename();}
}

加上关键字@RequestPart，并将获取的文件添加到另一个目录下

@RequestMapping("/hello")
@RestController
public class HelloSpring {@RequestMapping("/f2")public String f2(@RequestPart MultipartFile file) throws IOException {String filename = "/Users/liuwenwen/Desktop/学习/比特/Test" + file.getOriginalFilename();file.transferTo(new File(filename));return "成功获取文件的名字为：" + file.getOriginalFilename();}
}