lombok的@Slf4j注解使用+常用注解

╰+哭是因爲堅強的太久メ 2022-01-27 19:43 462阅读 0赞

# 第一种 #

### 依赖 ###

*  IDEA安装lombok插件
 *  IDEA配置  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70]
 *  maven配置

<dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.20</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-simple</artifactId>
                <version>1.7.25</version>
            </dependency>

### 例子 ###

package com.ydfind;
    
    import lombok.extern.slf4j.Slf4j;
    
    @Slf4j
    public class MainApp {
        public static void main(String[] args) {
            log.info("HelloWorld");
        }
    }

结果如下  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 1]

# 第二种使用log4j #

### 依赖 ###

前面两点见上面。maven配置如下：

<dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.20</version>
            </dependency>
            <dependency>
                <groupId>org.slf4j</groupId>
                <artifactId>slf4j-log4j12</artifactId>
                <version>1.7.25</version>
            </dependency>

需要再idea的maven工程的resource目录下加入log4j.xml文件，内容如下：

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE log4j:configuration PUBLIC "-//log4j/log4j Configuration//EN" "log4j.dtd">
    <log4j:configuration>
        <appender name="myConsole" class="org.apache.log4j.ConsoleAppender">
            <param name="Threshold" value="DEBUG"/>
            <layout class="org.apache.log4j.PatternLayout">
                <param name="ConversionPattern" value="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            </layout>
        </appender>
        <root>
            <level value="DEBUG"/>
            <appender-ref ref="myConsole" />
        </root>
    </log4j:configuration>

### 运行上面的MainApp.java ###

# 第三种slf4j + logback #

…待续

# 其他注解 #

*  类加@ToString(exclude=\{“body”,“css”\}): 这样打印类时，默认body与css不进行打印；

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70]: /images/20220126/35ab295fefe3425d8ba1b9c27a97e25f.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 1]: /images/20220126/ab3d29db2b8e44e58bccfb2cdbeb1fb6.png