var data= [{name:"jon",age:"12"},{name:"jic",age:"18"},{name:"petter",age:"14"}]
$.ajax({
url:'./service/iposremoteapprove/caseToUser.do',
data:{
ds:JSON.stringify(data) /* 特别需要注意这里,需要现将json数组通过JSON.stringify()处理一下之后,才能作为我们需要的参数传过去
},
type:'post',
dataType:"json",
success:function(json){
$.messager.alert("提示","成功","info");
}
});
// 存放对象
JSONObject jObject = new JSONObject();
while(reDataSet.next()){
jObject.put("kpbbh", reDataSet.getString("kpbbh"));
jObject.put("ssbbh", reDataSet.getString("ssbbh"));
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd");
Date date=reDataSet.getDate("qysj");
String str=sdf.format(date);
jObject.put("qysj", str);
}
前台jsp
$.ajax({
url : '/BbhflServlet',
data:{opType:'onload'},
type:'post',
success:function(data){
if(data==""){
}
else{
data = eval('(' + data + ')');
var kp= data.kpbbh;
$("#ssbbh").attr("value", data.ssbbh);
$("input[name='qysj']").attr("value", data.qysj);
}
}
})
后台javaservlet
if (conn != null) {
if("insert".equals(opType)){
result = bbhflDean.doUpdate(conn, kpbbh, ssbbh, qysj);
if (result == 0) {
message = "0";
res.getWriter().print(message);// result为后台需要抛出的内容字符串
} else if (result == 2) {
message = "2";
res.getWriter().print(message);
} else if (result == 3) {
message = "3";
res.getWriter().print(message);
}
}else if("onload".equals(opType)){
JSONObject jObject = new JSONObject();
jObject = bbhflDean.onLoad(conn);
res.getWriter().print(jObject);
LOGGER.debug(" if( onload .equals(opType))---map"+jObject);
}
}
java接收参数
String ds = request.getParameter("ds");
JSONArray json=JSONArray.fromObject(ds);
JSONObject jsonOne;
Map<String,String> map=null;
for(int i=0;i<json.size();i++){
updataMap = new HashMap<String,String>();
jsonOne = json.getJSONObject(i);
map.put("name", (String) jsonOne.get("name"));
map.put("age", (String) jsonOne.get("age"));
}
此时map中就保存了页面传过来的数组中所有json中的键值对了
使用ssm时:
前台页面:<body>
<h2>登录</h2>
<div>
<form action="/hello/login.htm" method="post">
用户名:<input type="text" name="username" >
密码:<input type="password" name="pwd">
<input type="submit" id="sumbit" value="登录">
</form>
</div>
</body>
后台部分:
@RequestMapping(value="/login",method= RequestMethod.POST)
public String Login(HttpServletRequest request,HttpServletResponse response,Model model){
String username=request.getParameter("username");
String password=request.getParameter("pwd");
User user=userService.getUserByUserName(username);
if(user==null)
{
model.addAttribute("message","用户不存在"); //传参数给前端
return "HelloWorld";
}else{
if(password.equals(user.getPassword())){
model.addAttribute("message","登陆成功"); //传参数给前端
return "HelloWorld";
}else {
model.addAttribute("message","密码错误"); //传参数给前端
return "HelloWorld";
}
}
}
helloword页面
<body>
<h1>message:${message}</h1>
<h1>this is my spring mvc</h1>
</body>