1.修复通知唯一约束冲突的bug

2.去掉examRecordData表中的主外键约束
3.修改所有相关的引用

examcloud-core-oe-student-api/src/main/java/cn/com/qmth/examcloud/core/oe/student/api/request/GetQrCodeReq.java

@@ -20,6 +20,9 @@ public class GetQrCodeReq extends BaseRequest {
 	//传输文件类型
 	private String transferFileType;
 
+	//是否用来测试环境
+	private boolean testEnv;
+
 	public Long getExamRecordDataId() {
 		return examRecordDataId;
 	}
@@ -59,4 +62,12 @@ public class GetQrCodeReq extends BaseRequest {
 	public void setTransferFileType(String transferFileType) {
 		this.transferFileType = transferFileType;
 	}
+
+	public boolean isTestEnv() {
+		return testEnv;
+	}
+
+	public void setTestEnv(boolean testEnv) {
+		this.testEnv = testEnv;
+	}
 }