json
@Controller
@RequestMapping("/crud")
public class UserController {
@Resource(name="userServiceImpl")
private UserService userService;
@RequestMapping(method = RequestMethod.GET)
public @ResponseBody CustomUserResponse findAllUser(){
List<UserVO> users = userService.getAllUsers();
CustomUserResponse response = new CustomUserResponse();
response.setRows(users);
response.setRecords( String.valueOf(users.size()) );
response.setPage( "1" );
response.setTotal( "10" );
return response;//返回给jqGrid
}
}
jsp
<script type ="text/javascript">
$(function () {
$("#list").jqGrid({
url: "/GridApp/crud",//获取数据的地址
datatype: "json",//从服务器端返回的数据类型，默认xml
mtype: "GET",//ajax提交方式。POST或者GET，默认GET
colNames: ["编号", "姓名", "性别", "年龄", "备注"],//列显示名称，是一个数组对象
/*
常用到的属性：name 列显示的名称；index 传到服务器端用来排序用的列名称；
width 列宽度；align 对齐方式；sortable 是否可以排序
*/
colModel: [
{ name: "id", width: 55 },
{ name: "name", width: 90 },
{ name: "sex", width: 80, align: "right" },
{ name: "age", width: 80, align: "right" },
{ name: "remark", width: 80, align: "right" }
],
pager: "#pager", //定义翻页用的导航栏，必须是有效的html元素。翻页工具栏可以放置在html页面任意位置
rowNum: 10, //在grid上显示记录条数，这个参数是要被传递到后台
rowList: [10, 20, 30],//一个下拉选择框，用来改变显示记录数，当选择时会覆盖rowNum参数传递到后台
sortname: "invid",//默认的排序列。可以是列名称或者是一个数字，这个参数会被提交到后台
sortorder: "desc",//排序顺序，升序或者降序（asc or desc）
viewrecords: true,//定义是否要显示总记录数
emptyrecords: "Empty records",//当返回的数据行数为0时显示的信息。只有当属性 viewrecords 设置为ture时起作用
gridview: true,//构造一行数据后添加到grid中，如果设为true则是将整个表格的数据都构造完成后再添加到grid中，但treeGrid, subGrid, or afterInsertRow 不能用
autoencode: true,//对url进行编码
caption: "My first grid",//表格名称
jsonReader : {
root: "rows",
page: "page",
total: "total",
records: "records",
repeatitems: false,
cell: "cell",
id: "id"
}
});
});
</script>
<body>
<table id = "list" ><tr><td></td></tr></table>
<div id = "pager"></div>
</body>
异常
严重: Servlet.service() for servlet [springmvc] in context with path [/GridApp] threw exception [Request processing failed; nested exception is java.lang.IllegalArgumentException: No converter found for return value of type: class com.java.json.CustomUserResponse] with root cause
java.lang.IllegalArgumentException: No converter found for return value of type: class com.java.json.CustomUserResponse
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:178)
at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:153)
at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:165)
at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:80)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:126)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:121)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:218)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
