springmvc怎样使用POJO作为参数(mvc,pojo,spring,编程语言)

springmvc会按请求参数名和POJO属性名进行匹配，自动为该对象填充属性值，支持级联属性。

User.java

packagecom.gong.springmvc.entities;publicclassUser{privateStringusername;privateStringpassword;privateStringemail;privateIntegerage;Addressaddress;publicStringgetUsername(){returnusername;}publicvoidsetUsername(Stringusername){this.username=username;}publicStringgetPassword(){returnpassword;}publicvoidsetPassword(Stringpassword){this.password=password;}publicStringgetEmail(){returnemail;}publicvoidsetEmail(Stringemail){this.email=email;}publicIntegergetAge(){returnage;}publicvoidsetAge(Integerage){this.age=age;}publicAddressgetAddress(){returnaddress;}publicvoidsetAddress(Addressaddress){this.address=address;}@OverridepublicStringtoString(){return"User[username="+username+",password="+password+",email="+email+",age="+age+",address="+address+"]";}}

Address.java

packagecom.gong.springmvc.entities;publicclassAddress{privateStringcity;privateStringstreet;publicStringgetCity(){returncity;}publicvoidsetCity(Stringcity){this.city=city;}publicStringgetStreet(){returnstreet;}publicvoidsetStreet(Stringstreet){this.street=street;}@OverridepublicStringtoString(){return"Address[city="+city+",street="+street+"]";}}

SpringmvcTest.java

importcom.gong.springmvc.entities.User;@RequestMapping("/springmvc")@ControllerpublicclassSpringmvcTest{privatestaticfinalStringSUCCESS="success";@RequestMapping(value="/testPojo")publicStringtestPojo(Useruser){System.out.println("testPojo:"+user);returnSUCCESS;}}

index.jsp

<formaction="springmvc/testPojo"method="POST"><br><span>username:</span><inputtype="text"name="username"><br><span>password:</span><inputtype="password"name="password"><br><span>email:</span><inputtype="text"name="password"><br><span>age:</span><inputtype="text"name="password"><br><span>city:</span><inputtype="text"name="address.city"><br><span>street:</span><inputtype="text"name="address.street"><br><inputtype="submit"value="submit"><br></form>

启动tomcat服务器之后：

输入相应信息点击提交：

成功为pojo赋值，包括级联属性address。