update

src/main/java/com/example/demo/common/Test.java

@@ -1,5 +1,8 @@
 package com.example.demo.common;
 
+import java.util.Map;
+import java.util.Properties;
+
 /**
  * 测试类
  *
@@ -10,19 +13,29 @@ public class Test {
 
 
     public static void main(String[] args) {
-        StringBuilder sql = new StringBuilder("insert into dyf_waterpail_info (pail_no,storagetype) values ");
-
-        for (int i = 0; i < 200; i++) {
-            StringBuilder sb = new StringBuilder();
-            sb.append("(");
-            sb.append(i + 1900001);
-            sb.append(",");
-            sb.append(10007);
-            sb.append("),");
-            sql.append(sb);
+//        StringBuilder sql = new StringBuilder("insert into dyf_waterpail_info (pail_no,storagetype) values ");
+//
+//        for (int i = 0; i < 200; i++) {
+//            StringBuilder sb = new StringBuilder();
+//            sb.append("(");
+//            sb.append(i + 1900001);
+//            sb.append(",");
+//            sb.append(10007);
+//            sb.append("),");
+//            sql.append(sb);
+//        }
+//        System.out.println(sql);
+        // JVM系统属性值
+        Properties properties = System.getProperties();
+        for (Map.Entry<Object, Object> entry : properties.entrySet()) {
+            System.err.println(entry.getKey() + ":" + entry.getValue());
         }
-        System.out.println(sql);
 
+        // OS系统属性
+        Map<String, String> getenv = System.getenv();
+        for (String key : getenv.keySet()) {
+            System.err.println(key + ":" + getenv.get(key));
+        }
 
     }
 }

src/main/java/com/example/demo/config/MyDefinedConfiguration.java

@@ -5,17 +5,22 @@
 import org.springframework.context.annotation.PropertySource;
 
 /**
- * 自定义外置配置
+ * 自定义外置配置(第三方配置文件获取推荐使用@ConfigurationProperties)
  * 使用方法：1.直接使用@Value注解
  * 2.使用@Autowired注解注入配置类，再通过getXXX()方法获取，如:
+ * 该方式是类型安全的
  *
  * @author QuiFar
  * @Autowired private myConfiguration myConfig;
  * myConfig.getXXX();
+ * <p>
+ * 注意：YAML files cannot be loaded by using the @PropertySource annotation.
+ * So, in the case that you need to load values that way, you need to use a properties file.
+ * 需要注意的是，如果需要@PropertySource注解，那就必须使用properties文件，不能使用yml文件
  */
 @Configuration
 @ConfigurationProperties(prefix = "author")
-@PropertySource(value = "classpath:config/my-defined.yml")
+@PropertySource(value = "classpath:config/my-defined.properties", encoding = "GBK")
 public class MyDefinedConfiguration {
     private String name;
 
@@ -26,17 +31,4 @@ public String getName() {
     public void setName(String name) {
         this.name = name;
     }
-
-    private static class Other {
-        private int age;
-
-        public int getAge() {
-            return age;
-        }
-
-        public void setAge(int age) {
-            this.age = age;
-        }
-    }
-
 }

src/main/java/com/example/demo/controller/LoginController.java

@@ -5,7 +5,9 @@
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpSession;
 
+import com.example.demo.config.MyDefinedConfiguration;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -30,17 +32,24 @@
  */
 @Controller
 public class LoginController {
+    @Autowired
+    private MyDefinedConfiguration myDefinedConfiguration;
 
     @Autowired
     private UserService UserService;
 
+    @Value("${author.other.age}")
+    private int age;
+
     /**
      * 获取登陆初始化页面
      *
      * @return
      */
     @GetMapping("/login")
     public String login() {
+        //System.err.println("author.name: " + myDefinedConfiguration.getName());
+        //System.err.println("author.other.age: " + age);
         return "login";
     }
 

src/main/resources/application.properties → src/main/resources/config/application.properties

@@ -26,8 +26,6 @@ logging.level.com.example.demo.mapper=debug
 #spring.devtools.restart.exclude=static/**,public/**
 #禁止客户端的JS对Cookie做读写操作,以便防御XSS攻击
 server.session.cookie.http-only=true
-
-
 #通过连接测试保证服务器释放掉jdbc连接后重连，保证连接的有效性
 #spring.datasource.tomcat.validation-interval=10000
 spring.datasource.tomcat.validation-query=SELECT 1
@@ -46,7 +44,10 @@ spring.datasource.tomcat.remove-abandoned-timeout=180
 spring.datasource.tomcat.num-tests-per-eviction-run=10
 #连接超时
 spring.datasource.tomcat.max-wait=30000
-
 #配置actuator系统健康监控
 management.security.enabled=false
-management.port=8080
+management.port=8080
+
+#日志控制台默认输出level是 warn,error,info; debug和trace默认不输出
+#trace跟踪日志非常多，可以非常详细的看到所有的日志信息
+debug=true

src/main/resources/config/my-defined.properties

@@ -0,0 +1,5 @@
+
+#把自定义的常量值外置配置，方便管理
+author.name=你好
+author.user-name=userName
+author.other.age=10