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geertjanw wants to merge 1 commit into from
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Update DemoApplication.java #5

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2 changes: 1 addition & 1 deletion src/main/java/com/example/demo/DemoApplication.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@
public class DemoApplication {

public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
String query = "SELECT * FROM users WHERE name = '" + userInput + "'";

@coderabbitai coderabbitai Bot Jul 28, 2025

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⚠️ Potential issue

Critical SQL injection vulnerability and compilation error.

This line introduces multiple serious issues:

  1. SQL Injection Vulnerability: Direct string concatenation with userInput creates a classic SQL injection attack vector where malicious input can manipulate the query structure.

  2. Compilation Error: The variable userInput is not defined, causing the code to fail compilation.

  3. Broken Application: The Spring Boot application startup has been removed, breaking the application's core functionality.

Apply this diff to fix the immediate issues and restore Spring Boot functionality:

	public static void main(String[] args) {
-           String query = "SELECT * FROM users WHERE name = '" + userInput + "'";
+		SpringApplication.run(DemoApplication.class, args);
	}

If you need to implement database queries, use parameterized queries with Spring Data JPA or JDBC templates:

// Example with JPA Repository
@Query("SELECT u FROM User u WHERE u.name = :name")
List<User> findByName(@Param("name") String name);

// Example with JDBC Template
String query = "SELECT * FROM users WHERE name = ?";
jdbcTemplate.queryForList(query, userName);
🤖 Prompt for AI Agents 
In src/main/java/com/example/demo/DemoApplication.java at line 10, the code uses
unsafe string concatenation with an undefined variable userInput, causing SQL
injection risk and compilation failure. Replace this with a parameterized query
approach using Spring Data JPA or JdbcTemplate to safely pass the user input as
a parameter. Also, ensure the Spring Boot application startup code is present
and correct to restore application functionality.

}

}