JS中用EL表达式获取上下文参数值

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1. action返回参数到页面

/**   * 测试js中获取后台传值   * @param model   * @param req   * @returnString */@RequestMapping("getValue")public String getValue(Model model, HttpServletRequest req){model.addAttribute("stringValue", "测试在js中取值...");model.addAttribute("numberValue", 111);List<String> list = new ArrayList<String>();list.add("aaa");list.add("bbb");list.add("ccc");model.addAttribute("arrayValue", list);model.addAttribute("jsonStringValue", JSON.toJSONString(list));User user = new User();user.setUserID("1");user.setUserName("test");user.setMobile("13800000000");user.setEmail("test@163.com");user.setNickName("test");model.addAttribute("objJsonString", JSON.toJSONString(user));return "/getValue.htm";}

2. js中用EL表达式获取参数值

<script type="text/javascript">$(function(){var stringValue = '${stringValue}';console.log('stringValue-------------' + stringValue);var numberValue = ${numberValue};console.log('numberValue-------------' + numberValue);var jsonStringValue = ${jsonStringValue};console.log('jsonValue---------------' + jsonStringValue);var jsonStringValue1 = '${jsonStringValue}';console.log('jsonValue1---------------' + jsonStringValue1); var objJsonString = '${objJsonString}';console.log("objJsonString------------------- " + objJsonString);var obj = JSON.parse(objJsonString);console.log("userName ------------ " + obj.userName);});</script>

备注：取数值型参数值，js中EL表达式不用加引号；取字符串型参数值，js中EL表达式需要加引号；对象和集合类型参数值，需要在后台用JSON.toJSONString()进行转化。

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