SpringMVC-请求与相应

一、环境准备

<dependencies><dependency><groupId>javax.servlet</groupId><artifactId>javax.servlet-api</artifactId><version>3.1.0</version><scope>provided</scope>  //确定范围避免与tomcat冲突</dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId> //启动spring内的webmvc<version>5.2.10.RELEASE</version></dependency><dependency><groupId>com.fasterxml.jackson.core</groupId><artifactId>jackson-databind</artifactId><version>2.9.0</version></dependency></dependencies><build><plugins><plugin><groupId>org.apache.tomcat.maven</groupId><artifactId>tomcat7-maven-plugin</artifactId><version>2.1</version><configuration><port>80</port><path>/</path><uriEncoding>UTF-8</uriEncoding>  //此处是解决tomcat中文乱码问题</configuration></plugin></plugins></build>

二、请求

1.设置映射路径

优化后的：可以到看，user和book类中都有save()方法，故应该在类上添加@RequestMapping()来区分两个类。

@Controller
@RequestMapping("/user")
public class UserController {
@RequestMapping("/save")
@ResponseBody
public String save(){
System.out.println("user save ...");
return "{'module':'user save'}";
}
@RequestMapping("/delete")
@ResponseBody
public String save(){
System.out.println("user delete ...");
return "{'module':'user delete'}";
}
}
@Controller
@RequestMapping("/book")
public class BookController {
@RequestMapping("/save")
@ResponseBody
public String save(){
System.out.println("book save ...");
return "{'module':'book save'}";
}
}