/**
 * 替换map中已知key的value值
 */
@Test
public void s() {
    Map<String, Object> requestMap = new HashMap();
    requestMap.put("password", "avc");
    requestMap.put("table_comment", "应收款预警排行榜宽表-按天统计");
    for (Map.Entry<String, Object> entry : requestMap.entrySet()) {
        if ("password".equals(entry.getKey())) {
            requestMap.put("password",entry.getValue()+"加密");
        }
    }



    System.out.println("++++++++++++++++++++++++++++");
    for (Map.Entry<String, Object> entry : requestMap.entrySet()) {
        System.out.println("key====="+entry.getKey());
        System.out.println("value====="+entry.getValue());
        System.out.println("---------------");
    }
}