通过java后台拼接json字符串修改页面样式----一页多用 + 双引号(")和单引号(')截断字符串解决方案

1.组装json格式字符串

/**
     * 通过读取流程对应工单的字段权限 将字段权限拼接为json格式字符串
     * 拼接json字符串格式：
     * [{"fieldNane":"name1","fieldRight":"right1"},{"fieldNane":"name2","fieldRight":"right2"},...{"fieldNane":"name3","fieldRight":"right3"}]
     * @param list
     * @return
     */

    public String append2Json(List list){
        StringBuffer sb = new StringBuffer("[");
        for(int i=0;i<list.size();i++){
            FwtActionRight farObj = (FwtActionRight)list.get(i);
            String fieldName = farObj.getFieldName().toLowerCase();
            String fieldRight = farObj.getFieldRight().toLowerCase();
            sb.append("{\"fieldName\":\"");
            sb.append(fieldName);
            sb.append("\",\"fieldRight\":\"");
            sb.append(fieldRight);
            sb.append("\"");
            sb.append("},");
            //最后一个元素的右边大括号'}'后不添加','
            if(i==list.size()-1){
                sb.append("{\"fieldName\":\"");
                sb.append(fieldName);
                sb.append("\",\"fieldRight\":\"");
                sb.append(fieldRight);
                sb.append("\"");
                sb.append("}");
            }
        }
        sb.append("]");
        String str = sb.toString().replaceAll("\"", "%22");//避免js获取此字符串时被双引号(")截断
        //String str = sb.toString().replaceAll("\"", "%27");////避免js获取此字符串时被单引号(')截断
        return str;
    }


2.获取表单字段对应的权限，将其拼接为json格式的字符串，并且将其值传到页面
  /**
     * 显示‘现场检查’步骤--填单页面
     * @param mapping
     * @param form
     * @param request
     * @param response
     * @return
     * @throws Exception
     */
    public ActionForward showAddNPatrolOrder_localeCheck(ActionMapping mapping,ActionForm form,
            HttpServletRequest request,HttpServletResponse response)throws Exception{
        String actionName="现场检查";
        String flowName="设备巡维工作联系单";
        String tableName="MAP_HISTORY_NPATROL";
        List list = swfBiz.getFwtActionRights(actionName,tableName,flowName);
        //拼接json格式的字符串
        String jsonStr = this.append2Json(list);
        request.setAttribute("elementJson", jsonStr);
        return mapping.findForward("success");
    }
    


3.jsp页面上的json格式字符串值
<input name="elements" id="elements" type="text" style="DISPLAY: none; WIDTH: 77px; HEIGHT: 22px" size="10" value="${elementJson }"/>



4.js jQuery取页面上的json字符串格式值，并将其解析，转为json数据类型，然后根据不同字段的权限，写入其相应的格式。
/**
	 * 显示‘现场检查’页面
	 */	
	var elementList = $('#elements').val();
	elementList = unescape(elementList);//解析双引号、单引号
	var json = eval('('+elementList+')');//json格式字符串转为json数据类型
	for(var i=0;i<json.length;i++){
		var fieldName = json[i].fieldName;
		var fieldRight = json[i].fieldRight;
		if(fieldRight=='r'){//r--只读
			$('#'+fieldName).attr("readonly","");
			$('#'+fieldName).attr("readonly","readonly");
			$('#'+fieldName).css("border-style","none");//.css("background-color","red");
		}else if(fieldRight=='w'){//w--可写
			$('#'+fieldName).attr("readonly","");
			$('#'+fieldName).css("border-style","");//.css("background-color","green");
		}
	}