一、接受JSON對象字符串
在SpringMVC環境中,@RequestBody接收的是一個Json對象的字符串,而不是一個Json對象。然而在ajax請求往往傳的都是Json對象,後來發現用 JSON.stringify(data)的方式就能將對象變成字符串。同時ajax請求的時候也要指定dataType: "json",contentType:"application/json" 這樣就可以輕易的將一個對象或者List傳到Java端,使用@RequestBody即可綁定對象或者List.
<script type="text/javascript">
$(document).ready(function(){
var saveDataAry=[];
var data1={"userName":"test","address":"gz"};
var data2={"userName":"ququ","address":"gr"};
saveDataAry.push(data1);
saveDataAry.push(data2);
$.ajax({
type:"POST",
url:"user/saveUser",
dataType:"json",
contentType:"application/json",
data:JSON.stringify(saveFateAry<span style="font-family: Arial, Helvetica, sans-serif;">), </span>
success:function(data){
}
});
});
</script>
@RequestMapping(value = "saveUser", method = {RequestMethod.POST }})
@ResponseBody
public void saveUser(@RequestBody List<User> users) {
userService.batchSave(users);
}
二、向前臺傳送JSON數據
1.先配置 XXX_ servletxml
<!-- 整合jackson 返回一個json格式 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter"/>
</list>
</property>
</bean>
<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter"/>
2.再然後Action方法裏註解就可以
<pre code_snippet_id="277836" snippet_file_name="blog_20140406_4_8928095" name="code" class="java">@RequestMapping(value="/sendShopInJSON", method = RequestMethod.POST)
@ResponseBody
public Shop sendShopInJSON(){
Shop shop = new Shop();
shop.setName(name);
shop.setStaffName(new String[]{"mkyong1", "mkyong2"});
return shop;
}
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注意:JSON.stringify() : 將對象轉換成json字符串。JSON.parse(): 將json字符串轉換成json對象。