The request sent by the client was syntactically incorrect.

ajax發起請求時報400錯誤。請求代碼如下：

var reportId=($(obj).parent().parent().parent().children(":first").attr("value"));var isChecked=$(obj).prop("checked")=="checked"?1:0;var reportSetting=$(obj).attr("value");var setting={reportId:reportId,isChecked:isChecked,reportSetting:reportSetting};console.log(JSON.stringify(setting));$.ajax({type: "POST",url: "/reportConfiguration",contentType:"application/json",data:JSON.stringify(setting),dataType: "json",success: function (msg) {if (msg.isSuccess){$("#msg").html("設置成功")}else{$("#msg").html(msg.result);}}});

服務端代碼：

@RequestMapping("/reportConfiguration")@ResponseBodypublic String reportSet(@RequestBody ReportSettingEditBean reportSettingEditBean,HttpServletRequest request){return "";}

bean定義：

public class ReportSettingEditBean {private long reportId;private boolean isChecked;private ReportSetting reportSetting;public long getReportId() {return reportId;}public void setReportId(long reportId) {this.reportId = reportId;}public boolean isChecked() {return isChecked;}public void setChecked(boolean isChecked) {this.isChecked = isChecked;}public ReportSetting getReportSetting() {return reportSetting;}public void setReportSetting(ReportSetting reportSetting) {this.reportSetting = reportSetting;} }public enum ReportSetting {Fixed(1),Scroll(2),First(4);private int value;public int getValue() {return value;}ReportSetting(int value){this.value=value;} }

解決：

在js中核對數據類型與接收數據類中屬性的數據類型是否一致。

上例中：ReportSetting 是枚舉對象， 而var reportSetting=$(obj).attr("value") 是字符串。修改成整數即可。正確請求如下：

var reportId=($(obj).parent().parent().parent().children(":first").attr("value"));var isChecked=$(obj).prop("checked")=="checked"?1:0;var reportSetting=parseInt($(obj).attr("value"));var setting={reportId:reportId,isChecked:isChecked,reportSetting:reportSetting};$.ajax({type: "POST",url: "/reportConfiguration",contentType:"application/json",data:JSON.stringify(setting),dataType: "json",success: function (msg) {if (msg.isSuccess){$("#msg").html("設置成功")}else{$("#msg").html(msg.result);}}});

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