Dev5 #11
Dev5 #11
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WalkthroughThe pull request removes two unnecessary blank lines in the Changes
Sequence Diagram(s)sequenceDiagram
participant C as Client
participant F as Fastjson
participant P as JSON Parser
C->>F: POST /deserialize (JSON payload)
F->>P: Parse JSON string from 'params'
alt Parsing Successful
P-->>F: JSONObject with "name"
F-->>C: Return value of "name"
else Parsing Fails
P-->>F: Exception thrown
F-->>C: Return exception message
end
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Actionable comments posted: 4
🧹 Nitpick comments (3)
src/main/java/org/joychou/controller/Fastjson.java (3)
21-25: Improve error handling with specific exceptionsCatching generic
Exceptionis discouraged. Instead, catch more specific exceptions likeJSONExceptionorNullPointerExceptionto handle different error scenarios appropriately.try { // 将post提交的string转换为json JSONObject ob = JSON.parseObject(params); return ob.get("name").toString(); - } catch (Exception e) { + } catch (com.alibaba.fastjson.JSONException e) { + // Handle JSON parsing errors + return "Invalid JSON format"; + } catch (NullPointerException e) { + // Handle missing "name" field + return "Name field not found"; + } catch (Exception e) { return e.toString(); }🧰 Tools
🪛 PMD (7.8.0)
[Medium] 23-23: Avoid variables with short names like ob (ShortVariable)
(Code Style)
[Medium] 23-23: Local variable 'ob' could be declared final (LocalVariableCouldBeFinal)
(Code Style)
[Medium] 24-24: A method should have only one exit point, and that should be the last statement in the method (OnlyOneReturn)
(Code Style)
[Medium] 25-25: Avoid catching generic exceptions such as NullPointerException, RuntimeException, Exception in try-catch block (AvoidCatchingGenericException)
(Design)
17-19: Add Javadoc documentation for public methodsPublic methods should have Javadoc comments explaining their purpose, parameters, return values, and potential exceptions.
+ /** + * Deserializes a JSON string and extracts the "name" value. + * + * @param params JSON string from request body + * @return the value of the "name" field or error message if parsing fails + */ @RequestMapping(value = "/deserialize", method = {RequestMethod.POST}) @ResponseBody public String Deserialize(@RequestBody String params) {🧰 Tools
🪛 PMD (7.8.0)
[Medium] 19-19: Public method and constructor comments are required (CommentRequired)
(Documentation)
[High] 19-19: The instance method name 'Deserialize' doesn't match '[a-z][a-zA-Z0-9]*' (MethodNamingConventions)
(Code Style)
[Medium] 19-19: Parameter 'params' is not assigned and could be declared final (MethodArgumentCouldBeFinal)
(Code Style)
17-28: Consider using a more structured request and response modelUsing plain String parameters and returns makes the API less self-documenting and type-safe. Consider using model classes for better maintainability.
// Add these model classes public class DeserializeRequest { private String name; // Getters and setters public String getName() { return name; } public void setName(String name) { this.name = name; } } public class DeserializeResponse { private String name; private boolean success; private String error; // Getters and setters } // Then update the method @RequestMapping(value = "/deserialize", method = {RequestMethod.POST}) @ResponseBody public DeserializeResponse deserialize(@RequestBody DeserializeRequest request) { DeserializeResponse response = new DeserializeResponse(); try { if (request.getName() != null) { response.setName(request.getName()); response.setSuccess(true); } else { response.setSuccess(false); response.setError("Name not provided"); } } catch (Exception e) { response.setSuccess(false); response.setError("Processing error"); // Log the exception } return response; }🧰 Tools
🪛 PMD (7.8.0)
[Medium] 19-19: Public method and constructor comments are required (CommentRequired)
(Documentation)
[High] 19-19: The instance method name 'Deserialize' doesn't match '[a-z][a-zA-Z0-9]*' (MethodNamingConventions)
(Code Style)
[Medium] 19-19: Parameter 'params' is not assigned and could be declared final (MethodArgumentCouldBeFinal)
(Code Style)
[Medium] 23-23: Avoid variables with short names like ob (ShortVariable)
(Code Style)
[Medium] 23-23: Local variable 'ob' could be declared final (LocalVariableCouldBeFinal)
(Code Style)
[Medium] 24-24: A method should have only one exit point, and that should be the last statement in the method (OnlyOneReturn)
(Code Style)
[Medium] 25-25: Avoid catching generic exceptions such as NullPointerException, RuntimeException, Exception in try-catch block (AvoidCatchingGenericException)
(Design)
📜 Review details
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📒 Files selected for processing (2)
ruleset.xml(0 hunks)src/main/java/org/joychou/controller/Fastjson.java(1 hunks)
💤 Files with no reviewable changes (1)
- ruleset.xml
🧰 Additional context used
🪛 PMD (7.8.0)
src/main/java/org/joychou/controller/Fastjson.java
[Medium] 19-19: Public method and constructor comments are required (CommentRequired)
(Documentation)
[High] 19-19: The instance method name 'Deserialize' doesn't match '[a-z][a-zA-Z0-9]*' (MethodNamingConventions)
(Code Style)
[Medium] 19-19: Parameter 'params' is not assigned and could be declared final (MethodArgumentCouldBeFinal)
(Code Style)
[Medium] 23-23: Avoid variables with short names like ob (ShortVariable)
(Code Style)
[Medium] 23-23: Local variable 'ob' could be declared final (LocalVariableCouldBeFinal)
(Code Style)
[Medium] 24-24: A method should have only one exit point, and that should be the last statement in the method (OnlyOneReturn)
(Code Style)
[Medium] 25-25: Avoid catching generic exceptions such as NullPointerException, RuntimeException, Exception in try-catch block (AvoidCatchingGenericException)
(Design)
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