【JAVA基础】常量变量维护

常量维护

   //参与签名的系统Header前缀,只有指定前缀的Header才会参与到签名中


//换行符<br/>
private static final char LF = &#39;\n&#39;;<br/>
public static final Long USER_ID = 2L;<br/>

示例一

application:

#简单汇

jdh:

  loginUrl: \({LOGIN_URL:https://inja-test.jdh.com.cn/main/loginTransfer?platformCode=JTWL000001&amp;entCode=}<br/>
  uploadUrl: \){LOGIN_URL:https://openapi-test.jdh.com.cn/open-file/openapi/upload/bybinary}

IiamJdhCompanyOperatorServiceImpl:

  @Value(“${jdh.loginUrl}”)


private String loginUrl;<br/>
@Value(&#34;${jdh.uploadUrl}&#34;)<br/>
private String uploadUrl;<br/>

示例二

application.properties

user.address.max-count=20

AddressServiceImpl

/**


 * 为了方便日后修改最大收货地址数量,可以在配置文件<br/>
 * application.properties中定义user.address.max-count=20<br/>
 */<br/>
//spring读取配置文件中数据:@Value(&#34;${user.address.max-count}&#34;)<br/>
@Value(&#34;${user.address.max-count}&#34;)<br/>
private Integer maxCount;<br/>

示例三