依赖包@H_403_3@
json-lib-2.4-jdk15.jar 可以到http://download.csdn.net/detail/sigangjun/5915019下载
编写Util类@H_403_3@
package cn.sigangjun.util;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import net.sf.json.JSONObject;
import net.sf.json.JsonConfig;
import net.sf.json.processors.JsonValueProcessor;
import cn.sigangjun.model.People;
/**
* <p>Title: json util</p>
* <p>Description: this util can covert object to jsonstring</p>
* @since 2013-8-12 下午3:32:19
* @version 1.0
* @author <a style='color:red' href='http://blog.csdn.net/sigangjun'>sigangjun</a>
*/
public class JsonUtils {
static JsonConfig jsonConfig = new JsonConfig();
static {
jsonConfig.registerJsonValueProcessor(Date.class,new JsonValueProcessor(){
@Override
public Object processArrayValue(Object value,JsonConfig arg1) {
try {
if (value instanceof Date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format((Date) value);
}
return value == null ? "" : value.toString();
} catch (Exception e) {
return "";
}
}
@Override
public Object processObjectValue(String arg0,Object arg1,JsonConfig arg2) {
try {
if (arg1 instanceof Date) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
return sdf.format((Date) arg1);
}
return arg1 == null ? "" : arg1.toString();
} catch (Exception e) {
return "";
}
}
});
}
@SuppressWarnings("rawtypes")
public static String printJsonForTree(List list) {
Map<String,Object> map = new HashMap<String,Object>();
map.put("total",list.size());
map.put("rows",list);
JSONObject json = JSONObject.fromObject(map,jsonConfig);
return json.toString();
}
/**
* 输出Json串
*
* @param list 业务集
* @param total 总数
* @return String Json串
*/
public static String outJsonString (List<?> list,Integer total) {
if (list == null || total == null) {
return "";
}
Map<String,total);
map.put("rows",jsonConfig);
return json.toString();
}
/**
* @param args
*/
public static void main(String[] args) {
/*List<Business> list = Lists.newArrayList();
Business bb = new Business();*/
List<People> alllist = new ArrayList<People>();
People p1 = new People("000","我是facher",new Date(),null,null);
List<People> childrenlist = new ArrayList<People>();
People p3 = new People("001","我是男孩",null);
People p4 = new People("002","我是女孩",null);
Map<String,People> friends = new HashMap<String,People>();
People p5 = new People("003","我是朋友1",null);
People p6 = new People("004","我是朋友2",null);
friends.put("111",p5);
friends.put("222",p6);
People p2 = new People("123","打印我吧！",p1,childrenlist,friends);
alllist.add(p2);
System.out.println(printJsonForTree(alllist));
}
public static String beanToJson(Object bean) {
JSONObject obj = JSONObject.fromObject(bean);
return obj.toString();
}
}
编写People类@H_403_3@
package cn.sigangjun.model;
import java.io.Serializable;
import java.util.Date;
import java.util.List;
import java.util.Map;
/**
* <p>Title: People class</p>
* <p>Description: People Class</p>
* @since 2013-8-12 下午3:39:38
* @version 1.0
* @author <a style='color:red' href='http://blog.csdn.net/sigangjun'>sigangjun</a>
*/
public class People implements Serializable {
private static final long serialVersionUID = 1L;
private String id;
private String name;
private Date birthday;
private People father;
private List<People> children;
private Map<String,People> friends;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
public People getFather() {
return father;
}
public void setFather(People father) {
this.father = father;
}
public List<People> getChildren() {
return children;
}
public void setChildren(List<People> children) {
this.children = children;
}
public Map<String,People> getFriends() {
return friends;
}
public void setFriends(Map<String,People> friends) {
this.friends = friends;
}
public static long getSerialversionuid() {
return serialVersionUID;
}
public People(String id,String name,Date birthday,People father,List<People> children,Map<String,People> friends) {
super();
this.id = id;
this.name = name;
this.birthday = birthday;
this.father = father;
this.children = children;
this.friends = friends;
}
public People() {
super();
// TODO Auto-generated constructor stub
}
}