This article mainly introduces the detailed explanation of springMVC's method of interacting with json data. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor and take a look.
Front desk code:
function channel(){ //先获取选中的值 var channelId = $("#channelId option:selected").val(); //来判断发送的链接 if(channelId ==2){ **需要注意地方 start** var schoolBannerInfo = { "img": channelId, "title": channelId, "info": channelId, "channelId": channelId }; **需要注意地方 end** $.ajax({ url:"ceshijson", type:"post", dataType:'json', **需要注意地方 start** contentType:'application/json;charset=utf-8', data:JSON.stringify(schoolBannerInfo), **需要注意地方 end** success:function(data){ alert(data); }, error:function(XMLHttpRequest, textStatus, errorThrown){ alert("Error") alert(XMLHttpRequest.status); alert(XMLHttpRequest.readyState); alert(textStatus); } }); } }
The bolded part is what you need to pay attention to.
The contentType:'application/json;charset=utf-8' cannot be omitted, otherwise a 415 error will be reported.
After all, what I am sending is jsonString, so I have to tell the server that the data coming is json data.
JSON.stringify() is to convert a JavaScript object into a json string
JSON.parse(jsonstr) is to convert a json string into a JavaScript object
Additional knowledge: json is actually a subset of JavaScript.
Reference address: www.jb51.net/article/35090.htm
Backend code:
pojo class:
public class SchoolBannerInfo { private Integer id; private Date createTime; private String img; private String title; private String info; private Integer seq; private Integer schoolId; private String type; private boolean enable; private String link; private String channelId; }## The #get and set methods are generated by yourself, so I won’t post them here.
@RequestMapping(value="/ceshijson",produces="application/json;charset=UTF-8") @ResponseBody public SchoolBannerInfo ceshijson(@RequestBody SchoolBannerInfo schoolBannerInfo) throws IOException{ // Map<String,Object> map = new HashMap<String,Object>(); // map.put("channelId", channelId); // ObjectMapper mapper = new ObjectMapper(); // channelId = mapper.writeValueAsString(map); return schoolBannerInfo; }
Note:
Special Recommendation:"php Programmer Toolbox" V0.1 version Download
2. 3.The above is the detailed content of Tutorial on springMVC processing json data. For more information, please follow other related articles on the PHP Chinese website!