springMVC (five) - Complete Ajax functionality

Reception and transmission parameter using Ajax

1, the return type is text type Controller manner.

@Controller
public class UserAnnotation {    
    @RequestMapping("info")
    @ResponseBody
    public String list(String name) {
        System.out.println(name);
        return "";
    }
    
    
}

Jquery call the front desk with the following codes

<script type="text/javascript">
    $.get("info",{"name":"张三"},function(data){
        alert(data);
    })
</script>

2, Controller returns the object type manner JSON

　　2.1, the first to import the package resolved jackson

　　2.2, together with the response method in @ResponseBody: json object into the java object.

　　2.3, the return value method may be a collection of strings objects.

code show as below:

@Controller
 public  class UserAnnotation { 
    
    @RequestMapping ( "info" )
     @ResponseBody      // json Java objects into an object, use the jar package jackson
　　 public the User List () { 
        the User User the User new new = ( "Joe Smith", 18) 
        return User ; 
    }     
}

 Jquery call the front desk with the following codes

<script type="text/javascript">
    $.get("info",function(data){
        alert(data.uname+"   "+data.age);
    })
</script>

 ajax returned to a string garbled solution

The reason is that distortion can be seen from the figure, provided in the source coding format to ISO-8859-1

 

Solution

The first

Springmvc profile configuration following code:

          

    <!--开启注解驱动AnnotationHandlerMapping  -->
    <mvc:annotation-driven>
        <mvc:message-converters>
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg index="0" value="utf-8"></constructor-arg>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

 

The second

Add encoding @RequestMapping provided as follows

@RequestMapping(value="info" ,produces="text/html;charset=UTF-8")