Apollo(五)-源码解析-参数配置位置

一时失言乱红尘 2021-11-17 08:50 490阅读 0赞

### Apollo-源码解析-配置文件位置 ###

*  配置文件位置
 *   *   *  Debug相关代码
         *  分析源码
         *  结论
 *  appid配置文件位置
 *  meta默认地址
 *  动手试验

# 配置文件位置 #

### Debug相关代码 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 1]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 3]

### 分析源码 ###

根据debug的最后一张图，可以看到，默认的配置文档目录windows为C:/opt/settings/server.properties，其它系统为/opt/settings/server.properties

### 结论 ###

修改源码

private static final String SERVER_PROPERTIES_LINUX = "/opt/settings/server.properties";
    private static final String SERVER_PROPERTIES_WINDOWS = "C:/opt/settings/server.properties";

为

private static final String SERVER_PROPERTIES_LINUX = "apollo-configuration.properties";
    private static final String SERVER_PROPERTIES_WINDOWS = "apollo-configuration.properties";

编译后，即可以在工程目录下的apollo-configuration.properties读取配置文件  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 4]

# appid配置文件位置 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 5]  
同理把com.ctrip.framework.foundation.internals.provider.DefaultApplicationProvider下

public static final String APP_PROPERTIES_CLASSPATH = "/META-INF/app.properties";

修改为

public static final String APP_PROPERTIES_CLASSPATH = "apollo-configuration.properties";

即可在apollo-configuration.properties里面配置appid；

# meta默认地址 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 6]  
修改com.ctrip.framework.apollo.core.MetaDomainConsts下

public static final String DEFAULT_META_URL = "http://config.local";

为

public static final String DEFAULT_META_URL = "http://localhost:8080";

编译源码后，这样在初始化就不需要设置dev\_meta的值了

System.setProperty("dev_meta", "http://localhost:8080");
    或idea启动参数
    -Ddev_meta=http://localhost:8080

> 若公司使用到apollo，但没发现配置参数的地方，那就快看看公司引用的jar包上述的几个位置，肯定会有发现的

# 动手试验 #

*  使用源码：具体见调试环境搭建https://blog.csdn.net/sndayYU/article/details/97165983。
 *  启动ConfigServiceApplication。  
    1）SimpleApolloConfigDemo去掉dev\_meta变量，清掉缓存，运行，结果读不出timeout；  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 7]  
    2）修改默认的meta，重新编译apollo-core，再跑SimpleApolloConfigDemo，结果能读出timeout的值  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 8]  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3NuZGF5WVU_size_16_color_FFFFFF_t_70 9]

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