错误:找不到操作或结果没有为操作操作定义结果.部分和结果{“col1":“col1"，“col2":“col2"}

Error: Could not find action or result No result defined for action action.Part and result {quot;col1quot;:quot;col1quot;,quot;col2quot;:quot;col2quot;}(错误:找不到操作或结果没有为操作操作定义结果.部分和结果{“col1:“col1，“col2:“col2})

问题描述

我没有收到来自服务器的 JSON 类型数据的响应.

I'm not getting response as JSON type data from server.

我正在使用 JSON 插件.

I'm using JSON plugin.

jQuery( "#dialog-form" ).dialog({ 
    autoOpen: false,
    height: 500,
    width: 750,
    modal: true,
    buttons :{
        "Search" : function(){
            jQuery.ajax({type : 'POST',
            dataType : 'json',
             url : '<s:url action="part" method="finder" />',
         success : handledata})
        }
    }
});
var handledata = function(data)
{
    alert(data);
}

如果 dataType = 'json' 我没有得到任何响应，但如果我没有提及任何 dataType，我将获得页面的 HTML 格式.

If dataType = 'json' I am not getting any response, but if I don't mention any dataType, I'm getting the HTML format of the page.

public String list(){
    JSONObject jo = new JSONObject();
    try {
        Iterator it = findList.iterator();
        while(it.hasNext()){
             SearchResult part = (SearchResult) it.next();
             jo.put("col1",part.getcol1());
             jo.put("col2",part.getcol2());
        }
        log.debug("--------->:"+jo.toString());
    } catch (Exception e) {
        log.error(e);
    }
    return jo.toString();
}

struts.xml:

<package name="default" namespace="/ajax" extends="json-default">
  <action name="finder" 
       class="action.Part" method="finder" name="finder">
       <result type="json" />
  </action>
</package>

JSP 页面:

<div id="dialog-form" >
    <form action="" id="channelfinder">
        <textarea id="products" name="prodnbr"<s:property value='prodNbr'/>   
    </form>
</div>

控制台错误:

org.apache.struts2.dispatcher.Dispatcher - 找不到操作或结果没有为动作 action.Part 定义结果结果 {"col1":"col1","col2":"col2"}

org.apache.struts2.dispatcher.Dispatcher - Could not find action or result No result defined for action action.Part and result {"col1":"col1","col2":"col2"}

web.xml:

    <?xml version="1.0" encoding="ISO-8859-1"?>
     <web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
      <display-name>/parts</display-name>
      <description>Parts List Web App</description>

    <filter>
          <filter-name>struts-cleanup</filter-name>
          <filter-class>org.apache.struts2.dispatcher.ActionContextCleanUp</filter-class>
        </filter>

        <filter>
        <filter-name>sitemesh</filter-name>
        <filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
        </filter>

       <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        <init-param>
            <param-name>actionPackages</param-name>
            <param-value>com.action</param-value>
        </init-param>
    </filter>


    <filter-mapping>
        <filter-name>struts-cleanup</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <filter-mapping>
        <filter-name>sitemesh</filter-name>
        <url-pattern>/*</url-pattern>
        <dispatcher>REQUEST</dispatcher>
        <dispatcher>FORWARD</dispatcher>
        <dispatcher>INCLUDE</dispatcher>
    </filter-mapping>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <error-page>
        <exception-type>java.lang.Throwable</exception-type>
        <location>/errorPage.jsp</location>
    </error-page>
    <error-page>
        <error-code>404</error-code>
        <location>/errorPage.jsp</location>
    </error-page>

  <!-- Spring -->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/applicationContext.xml</param-value>
  </context-param>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>

  </web-app>

我没有获取 jQuery 成功的数据.请纠正我，这里有什么问题?

I'm not getting data to jQuery success. Please correct me, whats wrong here?

推荐答案

一个 dataType : 'json' 被 jQuery Ajax 指定在执行操作和结果时 success 回调函数返回的数据类型，并从服务器.

A dataType : 'json' is used by jQuery Ajax to specify a data type that is expected to return by the success callback function when the action and result is executed, and a response returned from the server.

dataType(默认:智能猜测(xml、json、script 或 html))

<script type="text/javascript">
  $(function() {
    $("#dialog-form").dialog ({
      autoOpen: true,
      height: 500,
      width: 750,
      modal: true,
      buttons : {
        "Search" : function() {
          $.ajax({
            url : '<s:url action="part" />',
            success : function(data) {
              //var obj = $.parseJSON(data);
              var obj = data;
              alert(JSON.stringify(obj));
            }
          });
        }
      }
    });
  });
</script>

<package name="default" extends="struts-default">
  <action name="part" class="action.PartAction" method="finder">    
    <result type="stream">
      <param name="contentType">text/html</param>
      <param name="inputName">stream</param>
    </result>
  </action>
</package>

public class PartAction extends ActionSupport {

  public class SearchResult {
    private String col1;
    private String col2;

    public String getCol1() {
      return col1;
    }

    public void setCol1(String col1) {
      this.col1 = col1;
    }

    public String getCol2() {
      return col2;
    }

    public void setCol2(String col2) {
      this.col2 = col2;
    }

    public SearchResult(String col1, String col2) {
      this.col1 = col1;
      this.col2 = col2;
    }
  }

  private InputStream stream;

  //getter here
  public InputStream getStream() {
    return stream;
  }

  private List<SearchResult> findList = new ArrayList<>();

  public List<SearchResult> getFindList() {
    return findList;
  }

  public void setFindList(List<SearchResult> findList) {
    this.findList = findList;
  }

  private String list() {
    JSONObject jo = new JSONObject();
    try {
      for (SearchResult part : findList) {
        jo.put("col1", part.getCol1());
        jo.put("col2", part.getCol2());
      }
      System.out.println("--------->:"+jo.toString());
    } catch (Exception e) {
      e.printStackTrace();
      System.out.println(e.getMessage());
    }
    return jo.toString();
  }

  @Action(value="part", results = {
    @Result(name="stream", type="stream", params = {"contentType", "text/html", "inputName", "stream"}),
    @Result(name="stream2", type="stream", params = {"contentType", "application/json", "inputName", "stream"}),
    @Result(name="json", type="json", params={"root", "findList"})
  })
  public String finder() {
    findList.add(new SearchResult("val1", "val2"));
    stream = new ByteArrayInputStream(list().getBytes());
    return "stream2";
  }
}