@RequestMapping(value = "/download", method = RequestMethod.GET, produces ="application/json" , consumes="application/json")public String downloadProjectRequirementdetails(@RequestParam("StudID") int studID) throws JSONException, JsonProcessingException { Map<String, Object> response = new HashMap<String, Object>(); Map<String, Object> result = new HashMap<String, Object>(); List<Student> list = new ArrayList<Student>(); /* int stat = (int) result.get("o_status"); if( stat ==106) { */ result = studDao.downloadtestScnario(studID); json = mapper.writeValueAsString(result); JSONObject jsonObj = new JSONObject(json); if (jsonObj.has("#result-set-1")) { JSONArray jsonArray = jsonObj.getJSONArray("#result-set-1"); if (jsonArray.length() > 0) { for (int i = 0; i < jsonArray.length(); i++) { JSONObject MainObj = jsonArray.getJSONObject(i); Student testdetails = new Student(); testdetails.setStudID(MainObj.getInt("StudID")); testdetails.setFirstName(MainObj.getString("FirstName")); testdetails.setLastName(MainObj.getString("LastName")); testdetails.setAddress(MainObj.getString("Address")); testdetails.setMobileNo(MainObj.getInt("MobileNo")); list.add(testdetails); } response.put("response", list); response.put("StatusCode", 200); response.put("Message", "Download Completed"); } } else { response.put("StatusCode", 204); response.put("Message", "No data found!!!"); } //} json = mapper.writeValueAsString(response); return json; }
2 回答
FFIVE
TA貢獻1797條經驗 獲得超6個贊
該錯誤表明您沒有創建 bean。創建一個 xml bean 配置文件，然后為 downloadProjectRequirementdetails 方法所在的控制器創建 bean！
Smart貓小萌
TA貢獻1911條經驗 獲得超7個贊
此異常是由于 bean 問題造成的。您必須創建一個 xml bean 配置文件，然后為此控制器創建 bean。
您還可能注意到其他一些事情：您正在提供偵聽器 ContextLoaderListener
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
但您沒有為 spring 配置文件提供 context-param 。就像 applicationContext.xml 您必須為您的配置提供以下代碼片段
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>applicationContext.xml</param-value>
</context-param>
如果您提供基于java的spring配置，意味著您當時沒有使用xml文件進行spring配置，您必須提供以下代碼：
<!-- Configure ContextLoaderListener to use AnnotationConfigWebApplicationContext
instead of the default XmlWebApplicationContext -->
<context-param>
<param-name>contextClass</param-name>
<param-value>
org.springframework.web.context.support.AnnotationConfigWebApplicationContext
</param-value>
</context-param>
<!-- Configuration locations must consist of one or more comma- or space-delimited
fully-qualified @Configuration classes. Fully-qualified packages may also
be specified for component-scanning -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>com.nirav.modi.config.SpringAppConfig</param-value>
</context-param>
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