struts和ext整合

struts 1.x

 

public ActionForward jsonForTxry(ActionMapping mapping,ActionForm form,
HttpServletRequest request,HttpServletResponse response) throws ParseException{
LazyValidatorForm txryjcForm=(LazyValidatorForm)form;

int start=(txryjcForm.get("start")==null)?1:(Integer)txryjcForm.get("start");
int size=(txryjcForm.get("limit")==null)?10:(Integer)txryjcForm.get("limit");

String qdwdm=(txryjcForm.get("qdwdm")==null)?"":txryjcForm.get("qdwdm").toString();
String zdwdm=(txryjcForm.get("zdwdm")==null)?"":txryjcForm.get("qdwdm").toString();
String bbrq=(txryjcForm.get("bbrq")==null)?"":txryjcForm.get("qdwdm").toString();
String lx60=(txryjcForm.get("lx60")==null)?"":txryjcForm.get("qdwdm").toString();
String lx55=(txryjcForm.get("lx55")==null)?"":txryjcForm.get("qdwdm").toString();
String lx50=(txryjcForm.get("lx50")==null)?"":txryjcForm.get("qdwdm").toString();
String bdq=(txryjcForm.get("bdq")==null)?"":txryjcForm.get("qdwdm").toString();

String qxbm=UserInfo.getInstance().getQxbm();

Map <Object,Object> map=new HashMap <Object,Object>();
map.put("qdwdm", qdwdm);
map.put("zdwdm", zdwdm);
map.put("bbrq",new java.sql.Date(new SimpleDateFormat("yyyy/mm/dd").parse(bbrq).getTime()));
map.put("lx60", lx60);
map.put("lx55", lx55);
map.put("lx50", lx50);
map.put("bdq", bdq);
map.put("qxdm", qxbm);

Page queryPage=txryjc.pagedQuery(GrViewTxryjc.class, map, start / size + 1, size);

JSONObject json=new JSONObject();
try{
json.put("Total", queryPage.getTotalCount());
json.put("Limit", size);
JSONArray list=new JSONArray();
List rows=(List)queryPage.getResult();
for(int i=0;i <rows.size();i++){
GrViewTxryjc grViewTxryjc=(GrViewTxryjc)rows.get(i);
Map convert=new HashMap();
map.put("jclb", grViewTxryjc.getJclb());
map.put("dwdm", grViewTxryjc.getDwdm());
map.put("dwmc", grViewTxryjc.getDwmc());
map.put("xm", grViewTxryjc.getXm());
map.put("xb", grViewTxryjc.getXb());
map.put("bzhm", grViewTxryjc.getBzhm());
map.put("csrq", grViewTxryjc.getCsrq());
list.put(map);
json.put("txryjc", list);
}
}
catch(JSONException e){
e.printStackTrace();
System.out.println("错误："+e.getMessage());
}
this.renderText(response, json.toString());
return null;
}

//在父类的类中

protected void renderText(HttpServletResponse response, String text) {
render(response,text,"text/plain;charset=UTF-8");
}


protected void render(HttpServletResponse response, String text,String contentType){
try {
response.setContentType(contentType);
response.getWriter().write(text);
} catch (IOException e) {
log.error(e.getMessage(), e);
}
}

这个是手动转的JSON 是struts1.X的写法 2.0也可以这么转，用struts2.0的JSON转换也可以（有时候好像有问题）
要用上面的写法要去下个 JSON的JAR文件 网上有~~

 

 

struts 2.x

 

服务器端struts主要实现对数据的交换工作，客户端跟struts提交数据或者索要数据。
ext2对JSON数据的处理支持很好，而且相比XML，JSON具有更好的处理性能。

我前段是用struts2来做的，下面是一个action的例子：

package action;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import com.googlecode.jsonplugin.annotations.JSON;
import common.CacheManager;
import domain.ListRange;
import domain.User;
import UserService;
import ErrorMessage;

public class UserAction extends BaseActionSupport{
    private UserService userService;
    private int userid;
    private String name;
    private String loginid;
    private String usertype;

    public String list(){
        listrange=new ListRange();
        List l=cacheManager.getUsersList();
        if (l==null||l.size()==0){
            listrange.setTotalSize(0);
            return SUCCESS;
        }
        listrange.setTotalSize(l.size());
        List l2=null;
        if (limit<=0)
            l2=l;
        else{
            l2=new ArrayList();
            for (int i=start;i<start+limit&&i<l.size();i++){
                l2.add(l.get(i));
            }
        }
        listrange.setData(l2.toArray());

        return SUCCESS;
    }

    public String save(){
        int rtn=0;
        if (userid==0){
            rtn=userService.addUser(loginid, name, usertype);
        } else {
            User user=new User();
            user.setUserid(userid);
            user.setName(name);
            user.setUsertype(usertype);
            user.setLoginid(loginid);
            rtn=userService.updateUser(user);
        }
        setReturn(rtn);
        return SUCCESS;
    }

    @JSON(serialize=false)
    public String getLoginid() {
        return loginid;
    }
    public void setLoginid(String loginid) {
        this.loginid = loginid;
    }
    @JSON(serialize=false)
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    @JSON(serialize=false)
    public String getUsertype() {
        return usertype;
    }
    public void setUsertype(String usertype) {
        this.usertype = usertype;
    }
    public void setUserService(UserService userService) {
        this.userService = userService;
    }

    @JSON(serialize=true)
    public int getUserid() {
        return userid;
    }

    public void setUserid(int userid) {
        this.userid = userid;
    }

    @JSON(name="list")
    public ListRange getListrange() {
        return listrange;
    }

    @JSON
    public boolean isFailure() {
        return failure;
    }
    @JSON
    public boolean isSuccess() {
        return success;
    }
    @JSON
    public String getInfo() {
        return info;
    }

}



上面的例子显示了取用户列表（分页）和保存用户的功能。
用到了com.googlecode.jsonplugin（开源JSON插件），在struts的配置文件设置： 

        <action name="user" class="userAction">
            <result type="json"/>
        </action>


指出返回的类型为json

这样，struts action返回给客户端的就是一个JSON数据包
ext2处理这种JSON数据包支持很好。