jmeter，beanshell将字符串合并

StringBuffer strBuf = new StringBuffer();

String temp1 = "${courseDraftId_";
String temp2 = "}";
strBuf.append(temp1);
strBuf.append(${index});
strBuf.append(temp2);
log.info("strBuf--->"+strBuf.toString());
String courseDraftId = strBuf.toString();

vars.put("courseDraftId",courseDraftId);
log.info("courseDraftId--->"+courseDraftId);

运行结果：

courseDraftId--->${courseDraftId_1}
courseDraftId--->${courseDraftId_2}
courseDraftId--->${courseDraftId_3}
……