前端发送一个整型类型的数组发送给服务器报错
1.前端代码
$(function () {
$.ajax({
url: "send/array/three.html",
type: "post",
contentType: "application/json;charset=UTF-8",
data: JSON.stringify([5,8,12]),
success: function (response) {
alert("成功"+response)
},
error: function (response) {
alert("失败"+response.toString())
}
})
});
2.后端代码
@RequestMapping("/send/array/three.html")
@ResponseBody
public String testReceiveArrayThree(@RequestBody Integer[] array) {
Logger logger = LoggerFactory.getLogger(TestHandler.class);
for (Integer number:array) {
logger.info("number="+number);
}
return "target";
}
3.前端请求后端报错
4.原因:SpringMVC配置文件的mvc命名空间错误
原来:
修改后:
错误千万条,同个报错可能由多个原因造成的,还有可能的原因:
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1.没有导包jackson
<!-- Spring 进行 JSON 数据转换依赖 -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</dependency>
2.contentType不符合
3.前端请求添加了dataType: "json",