json 交互

@Controller
public class test {
    @RequestMapping("/test")
    @ResponseBody
    public DeviceScanDir test1(){
        return new DeviceScanDir();
    }
}

<mvc:annotation-driven/>

compile group: 'org.codehaus.jackson', name: 'jackson-mapper-asl', version: '1.9.13'
compile group: 'org.codehaus.jackson', name: 'jackson-core-asl', version: '1.9.13'
compile group: 'com.fasterxml.jackson.core', name: 'jackson-databind', version: '2.10.0'