1、servlet List转json
需要jar包,可以到我github下载
commons-beanutils-1.7.0.jar
commons-collections-3.2.jar
commons-httpclient-3.0.1.jar
commons-lang-2.4.jar
commons-logging-1.0.4.jar
ezmorph-1.0.3.jar
json-lib-2.2.3-jdk15.jar
代码:
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONArray;
@WebServlet("/searchMeg")
public class searchMeg extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
response.setCharacterEncoding("UTF-8");
String name=request.getParameter("name");
name=new String(name.getBytes("ISO-8859-1"),"UTF-8");
System.out.println(name);
List<String> list =new ArrayList<String>();
list.add(name);
list.add(name+name);
list.add(name+name+name);
list.add(name+name+name+name);
// 集合转为json
response.getWriter().println(JSONArray.fromObject(list).toString());
/*System.out.println(JSONArray.fromObject(list));*/
}
}
2、springMVC List转json
用@ResponseBody注解方法返回类型List,会把List转为json
@RequestMapping(value = "getOldNodes", method = RequestMethod.GET)
public @ResponseBody List getOldNodes(HttpSession session){
//转json传给js
List list=new ArrayList() ;
list.add(nodes);
list.add(relations);
return list;
}