三分之二的参数未到达 Spring 控制器

Question

我的 Spring 4 控制器中有以下内容。我正在尝试将记录添加到表数据库中。我不确定为什么我使用 POSTMAN 客户端提供的参数 testingID_ 和 definition 没有到达控制器。但是，参数 type_id 正在达到，如下所述。

从以下事实可以看出这一点：

当我使用http://localhost:8080/MyProject/addEmployeeRecord?employee_id=1234&type_id=4444&definition=test1212

1) 我检查了以下行的控制台输出：

logger.info("addEmployeeRecord ws params : " + 

                            "value="+definition+
                            ",employee_id="+testingID_+
                            ",type_id="+type_id+
                            ",rank="+rank
                            );

而且我在控制台日志中注意到以下内容：

addEmployeeRecord ws params : value=,employee_id=0,type_id=4444,rank=1

2) 我通过注入 HttpServletRequest 进行检查，如下所示，我看到所有参数都在以下行时到达执行：

request.getParameterMap().entrySet().forEach(entry -> logger.info("Parameter: " + entry.getKey() + Arrays.toString(entry.getValue())));

结果如下：

Parameter: employee_id[1234]
Parameter: type_id[4444]
Parameter: definition[test1212]

因为 testingID_ 总是 0 这是默认值并且小于 1 ，我总是得到 Invalid Employee ID parameter 异常。我该如何解决这个问题？

@RequestMapping(value="/addEmployeeRecord", method=RequestMethod.GET)
                public String addEmployeeRecord
                (
                    @RequestParam(value="employee_id", defaultValue="0") Integer testingID_,
                    @RequestParam(value="type_id", defaultValue="0") Integer type_id,  
                    @RequestParam(value="value", defaultValue="") String definition,
                    @RequestParam(value="rank", defaultValue="1") Integer rank,
                    HttpServletRequest request

                ) 
                {

                    String wsStatusJsonString = null;

                    logger.info("-----------------------------------------------------------------------------------------------------------");
                    logger.info("HttpRequest Parameters Check");
                    request.getParameterMap().entrySet().forEach(entry -> logger.info("Parameter: " + entry.getKey() + Arrays.toString(entry.getValue())));
                    logger.info("addEmployeeRecord ws params : " + 

                            "value="+definition+
                            ",employee_id="+testingID_+
                            ",type_id="+type_id+
                            ",rank="+rank
                            );

                    boolean addStatus = true;       
                    try {

                        // Validate the input parameters.
                        if (testingID_ < 1 ) {throw new Exception("Invalid Employee ID parameter"); }
                        if (StringUtils.isNullOrEmpty(definition)) { throw new Exception("Invalid  Definition Parameter");}

                        //some code


                        logger.info("addEmployeeRecord status:" + addStatus);
                        if (addStatus) {
                            wsStatusJsonString = GenericOrmStatusView.OrmStatusToJsonString(true, "Successfully Inserted Employee Record!", true);
                        } else {
                            wsStatusJsonString = GenericOrmStatusView.OrmStatusToJsonString(true, "Error ! Unable to Insert Employee Record !", true);
                        }
                    } catch (Throwable th) {
                        th.printStackTrace();
                        wsStatusJsonString = GenericOrmStatusView.OrmStatusToJsonString(false, th.getMessage(), true);
                    }

                    logger.info("-----------------------------------------------------------------------------------------------------------");
                    return wsStatusJsonString;
                }

Answer 1

在您的控制器方法中，声明了 @RequestParam(value="value", defaultValue="") String definition，而您将 definition=test1212 作为查询参数传递，要传递定义，您需要改为设置 value=test1212。我使用下面的代码来测试请求参数：

@RequestMapping(value = "/addEmployeeRecord", method = RequestMethod.GET)
    public String addEmployeeRecord(@RequestParam(value = "employee_id", defaultValue = "0") Integer testingID_,
            @RequestParam(value = "type_id", defaultValue = "0") Integer type_id,
            @RequestParam(value = "value", defaultValue = "") String definition,
            @RequestParam(value = "rank", defaultValue = "1") Integer rank, HttpServletRequest request

    ) {

        try {

            // Validate the input parameters.
            if (testingID_ < 1) {
                throw new Exception("Invalid Employee ID parameter");
            }
            if (StringUtils.isEmpty(definition)) {
                throw new Exception("Invalid  Definition Parameter");
            }

            // some code

        } catch (Throwable th) {
            th.printStackTrace();
        }

        return "testingID_ " + testingID_ + " type_id- " + type_id + " definition " + definition + " rank " + rank;
    }

邮递员捕获是：

三分之二的参数未到达 Spring 控制器

Two parameters out of three not reaching the Spring controller

java

spring

spring-4