java - log4j 尝试登录文件

Question

我正在尝试使用 log4j 将其记录到文件中 这是代码

    protected static Logger logger = Logger.getLogger(Application.class);
    private static final String DIRECTORY = "/Users/me/Desktop";
    private static final String EXTENSION = ".log";

    protected void setupLogger(String fileName) {
        SimpleLayout layout = new SimpleLayout();
        FileAppender appender = new FileAppender(layout, DIRECTORY + "/logs/" + fileName + EXTENSION, false);
        logger.addAppender(appender);
        logger.setLevel((Level) Level.DEBUG);
    }

这是我使用的 pom http://pastebin.com/vXdFtzSU

我得到的堆栈跟踪在这里

Error:(40, 28) java: incompatible types: org.apache.log4j.FileAppender cannot be converted to org.apache.log4j.Appender

我正在尝试遵循这个答案configure log4j to log to custom file at runtime

Answer 1

您好，尝试更改您的 Maven 依赖项，添加此依赖项:

    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>

并更改 Spring Boot 依赖项以排除日志记录依赖项:

      <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
          <exclusions>
            <exclusion>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-starter-logging</artifactId>
            </exclusion>
          </exclusions>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
          <exclusions>
        <exclusion>
          <groupId>org.springframework.boot</groupId>
          <artifactId>spring-boot-starter-logging</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

然后添加try/catch语句:

    protected void setupLogger(String fileName) {

        try {
            SimpleLayout layout = new SimpleLayout();
            FileAppender appender;
            appender = new FileAppender(layout, DIRECTORY + "/logs/" +        fileName + EXTENSION, false); 
            logger.addAppender(appender);
            logger.setLevel((Level) Level.DEBUG);
        } catch (IOException e) { 
            e.printStackTrace();
        }
    }