Java中前台往后台传递多个id参数的实例

1.传字符串的形式，字符串中每个id用 “，” 隔开

打印出来如下形式：

前台JS代码

function saveRoleAdd()
 {

  var roleNames = $('#roleNames').textbox("getText");
  var roleDetail = {};
   roleDetail.roleNames = roleNames;
  roleDetail.roleFunctionCount = 0;
  roleDetail.roleFunctionList = [];

  if(roleNames.length < 0 || roleNames.length == 0)
  {
   $.messager.alert("提示","请输入角色名");
   return;
  }


  var funNodeList = $('#roleFuntionTree').tree('getChecked', 'indeterminate');
  var funLeafList = $('#roleFuntionTree').tree('getChecked');

  if(funNodeList.length <=0 && funLeafList.length <= 0)
  {
   $.messager.alert("提示","请选择权限节点");
   return;
  }


  Array.prototype.push.apply(funNodeList, funLeafList); //将两个lis合并为一个数组

  var roleFunList = "";
  var roleFunNameList = "";
  for(var i=0; i < funNodeList.length; i++)
  {
   if (!isEmptyTarget(funNodeList[i].id))
   {
    if(!isEmptyTarget(roleFunList))
    {
    roleFunList += ",";  //拼接成用逗号隔开的字符串,里面是id
    roleFunNameList += ","; //拼接成用逗号隔开的字符串，里面text
    }
    roleFunList += funNodeList[i].id;
    roleFunNameList += funNodeList[i].text;

    var funDetail = {};
    funDetail.funId = parseInt(funNodeList[i].id);
    roleDetail.roleFunctionList.push(funDetail);
   }
  }
  roleDetail.roleFunctionCount = roleDetail.roleFunctionList.length;

  var rows = $("#tblRoleDetail").datagrid("getRows");
  for (var i = 0; i < rows.length; i++)
  {
   if (roleNames == rows[i].roleNames)
   {
    $.messager.alert("提示","重复的角色名!");
    return;
   }
  }

  $('#tblRoleDetail').datagrid('appendRow',
   {
    roleNames:roleNames,
    funId:roleFunNameList
    }
  );


   $.ajax(
   {
    type : "POST",
    url : "permiss-manager/setRoleDetail.action?_dc=" + Math.random(),
    data :
   {
    roleName:roleNames,
    roleDetailData : roleFunList,
   },
    dataType : "json",
   success : function(result)
   {
    $.messager.alert("提示",result.result);
    closeRoleAdd();
    refreshRoleSelectTree();
   }
  });

   $('#rolePanel').panel('refresh', "afc/page/permission-manager/role-main.jsp");
 }

后台Action方法代码

@Action("setRoleDetail")
 public void setRoleDetail()
 {
  webLogService.writeWebLog(ServletActionContext.getRequest().getSession().getAttribute("userId").toString(), "新增角色", ServletActionContext.getRequest().getRemoteAddr());

  String roleName = ServletActionContext.getRequest().getParameter("roleName");
  String roleDetailJsonData = ServletActionContext.getRequest().getParameter("roleDetailData");
  // 这一部分就是转成一个list。下面调用方式直接传一个list过去
  List<Integer> funIdList = new ArrayList<Integer>();
  String [] arrar = StringUtils.split(roleDetailJsonData, ",");
  for (int i = 0; i < arrar.length; i++)
  {
   Integer funId = null;
   if(NumberUtils.isNumber(arrar[i]))
   {
    funId = NumberUtils.toInt(arrar[i]);
    funIdList.add(funId);
   }

  }
  permissionService.setRole(roleName, funIdList);
  try
  {
   HttpServletResponse response = ServletActionContext.getResponse();
   response.setCharacterEncoding("utf-8");
   JSONObject result = new JSONObject();
   result.accumulate("result", "角色新增成功");
   response.getWriter().write(result.toString());

  } catch (Exception e)
  {
   e.printStackTrace();
  }

 }

2.直接传一个数组到后台

前台JS代码

function saveRoleEdit()
 {
  var roleNames = $('#roleNames').textbox("getText");
  var roleDetail = {};
  roleDetail.roleFunctionCount = 0;
  roleDetail.roleFunctionList = [];
  if(roleNames.length < 0 || roleNames.length == 0)
  {
   $.messager.alert("提示","请输入角色名");
   return;
  }
  var funNodeList = $("#roleFuntionTree").tree('getChecked','indeterminate');
  var funLeafList = $('#roleFuntionTree').tree('getChecked');
  if(funNodeList.length <=0 && funLeafList.length <= 0)
  {
   $.messager.alert("提示","请选择权限节点");
   return;
  }

  Array.prototype.push.apply(funNodeList, funLeafList); // funNodeList,funLeafList两个数组都变成合并后的数组
  var roleFunArray = [];
  for(var i=0; i < funNodeList.length; i++)
  {
   if (!isEmptyTarget(funNodeList[i].id))
   {
    roleFunArray.push(funNodeList[i].id);
   }
  }

   alert("权限ID Array为 ：" + JSON.stringify(roleFunArray));
  $.ajax(
  {
    type : "POST",
    url : "permiss-manager/modifyRoleAuthority.action?_dc=" + Math.random(),
    data :
   {
    roleName:roleNames,
    roleDetailStr:JSON.stringify(roleFunArray),
   },
   success : function(result)
   {
   if(result == "success")
   {
    $.messager.alert("提示","修改权限成功！","info");
    editRoleDialog();
    refreshRoleSelectTree();

   }
   else
   {
    $.messager.alert("提示","修改权限失败！","info");
   }
   }
  });

 }

后台Action方法

@Action("modifyRoleAuthority")
 public void modifyRoleAuthority() throws IOException
 {
  HttpServletResponse response = ServletActionContext.getResponse();
  response.setCharacterEncoding("utf-8");

  webLogService.writeWebLog(ServletActionContext.getRequest().getSession().getAttribute("userId").toString(), "权限给予", ServletActionContext.getRequest().getRemoteAddr());
  String roleName = ServletActionContext.getRequest().getParameter("roleName");
  String newFuncListStr = ServletActionContext.getRequest().getParameter("roleDetailStr");

  if(!StringUtils.isEmpty(roleName) && !StringUtils.isEmpty(newFuncListStr))
  {
   List<Integer> newFuncList = new ArrayList<Integer>();
   //这种方法可以把前台传过来的String类型的值 每个转化成int 因为我这里之前dao爆了 就是因为String不能转化为Int的原因 这里可以转一下
   JSONArray mJSONArray= JSONArray.fromObject(newFuncListStr);
   newFuncList = Arrays.asList((Integer[])JSONArray.toArray(mJSONArray, Integer.class));
   if(!newFuncList.isEmpty())
   {
    if(permissionService.setRole(roleName, newFuncList))
    {
     response.getWriter().write("success");
    }
    else
    {
     response.getWriter().write("fail");
    }
   }
  }
 }

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