[英]How to get object from http request in servlet?
I use jquery to send a json object servlet 我使用jquery发送json对象servlet
It send the following data in the request 它在请求中发送以下数据
Form Dataview URL encoded stringArray[]:s1 表单Dataview URL编码的stringArray []:s1
stringArray[]:s2 stringArray []:s2
stringArray[]:s3 stringArray []:s3
objectArray[0][key1]:val1 objectArray [0] [key1]:val1
objectArray[0][att1]:att val1 objectArray [0] [att1]:att val1
objectArray[1][key2]:val2 objectArray [1] [key2]:val2
objectArray[1][att2]:att val2 objectArray [1] [att2]:att val2
objectArray[2][key3]:val3 objectArray [2] [key3]:val3
objectArray[2][att3]:att val3 objectArray [2] [att3]:att val3
for the string array, I can use request.getParameterValues["stringArray"] 对于字符串数组,我可以使用request.getParameterValues [“ stringArray”]
but the object array is cannot. 但是对象数组不能。 How I can get the json array in the servlet? 如何在servlet中获取json数组?
var json={"stringArray":["s1", "s2", "s3"],
"objectArray":[{"key1":"val1", "att1":"att val1"},
{"key2":"val2", "att2":"att val2"},
{"key3":"val3", "att3":"att val3"}]
};
$.ajax
(
{
url:'../test',
data:json,
type:'post',
cache:false,
dataType:'json',
success:function(data)
{
},
error:function(){alert('error');}
}
);
You first need parse the JSON array in the servlet, then you can use this. 您首先需要在Servlet中解析JSON数组,然后可以使用它。
http://answers.oreilly.com/topic/257-how-to-parse-json-in-java/ http://answers.oreilly.com/topic/257-how-to-parse-json-in-java/
;-) ;-)
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