我试图从Javascript向Java servlet发送不同类型的数组。解析不同对象类型的json数组
用于产生和发送数据的JavaScript代码是:
function sendDataOnButtonPress()
{
var obj1 = {'key_11': "val_11", 'key_12': "val_12"};
var obj2 = {'key_21': "val_21", 'key_22': "val_22"};
var myArray = [obj1, obj2];
var params = {
data: JSON.stringify(myArray)
};
$.post("serv1", $.param(params), function(response) {
console.log("response = " + response);
});
}
用于处理该数据的Java代码是:
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
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 com.fasterxml.jackson.databind.ObjectMapper;
@WebServlet("/serv1")
public class serv1 extends HttpServlet {
private static final long serialVersionUID = 1L;
public serv1() {
super();
// TODO Auto-generated constructor stub
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String data = request.getParameter("data");
//System.out.println(data);
ObjectMapper mapper = new ObjectMapper();
Object[] objs = mapper.readValue(data, Object[].class);
System.out.println(objs[0]);
PrintWriter writer1 = response.getWriter();
String htmlRespone = "Dummy response";
writer1.println(htmlRespone);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
}
虽然线System.out.println(objs[0]);
正确输出第一对象的阵列中,我无法弄清楚如何访问对象的属性:
System.out.println(objs[0]["key_11"]);
无法编译。
所以,我的问题是如何正确解析从Java内的JavaScript发送的数据?
我打算使用除杰克逊以外的任何json解析库。