最近在用spring boot + vue.js作后台，在做批量删除的时候出现了异常

jackson报的错

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Can not deserialize instance of java.lang.String[] out of START_OBJECT token; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.lang.String[] out of START_OBJECT token
 at [Source: java.io.PushbackInputStream@72bf7f09; line: 1, column: 1]

转换成fastjson报的错

org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: exepct '[', but {, pos 1, json : {"systemIds":["1201678f34e24bf087a33efb88ca1d64 ","0e90bc00e6914c51bd0dfee01c97b55a "]}; nested exception is com.alibaba.fastjson.JSONException: exepct '[', but {, pos 1, json : {"systemIds":["1201678f34e24bf087a33efb88ca1d64 ","0e90bc00e6914c51bd0dfee01c97b55a "]}

好吧，看不懂，果断把spring boot原生的jackjson换成咱们中国的fastjson，好了，这下看懂了。原来是我前台发送的参数不对。json转换需要最外层就是数组的[]，我的参数在内层才是数组。

const url = self.HOST + "/system/delete";
self.$axios.post(url,{systemIds:ids}).then((response) => {
    if(response.data.code == '100'){
        self.$message.success('批量删除成功');
    }else{
        self.$message.error(response.data.mesg);
    }
})

把参数换成这样就对了

好吧，看不懂，果断把spring boot原生的jackjson换成咱们中国的fastjson，好了，这下看懂了。原来是我前台发送的参数不对。

const url = self.HOST + "/system/delete";
self.$axios.post(url,ids).then((response) => {
    if(response.data.code == '100'){
        self.$message.success('批量删除成功');
    }else{
        self.$message.error(response.data.mesg);
    }
})