mailConfig.properties
#服务器 mail.host=smtp.qq.com #端口号 mail.port=587 #邮箱账号 mail.userName=hzy_daybreak_lc@foxmail.com #邮箱授权码 mail.passWord=vxbkycyjkceocbdc #时间延迟 mail.timeout=25000 #发送人 mail.emailForm=hzy_daybreak_lc@foxmail.com #发件人 mail.personal=华夏衣裳 #主题 mail.subject=同袍用户激活 #内容模板 mail.html=您的邮箱验证码为：
MailConfig.java
/* * @(#)MailConfig.java Created on 2019年9月11日 * Copyright (c) 2019 ZDSoft Networks, Inc. All rights reserved. * $Id$ */ package com.hxyc.config.properties; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.PropertySource; import org.springframework.stereotype.Component; /** * @author huangzy * @version $Revision: 1.0 $, $Date: 2019年9月11日 上午10:29:35 $ */ @Configuration @PropertySource(value = "classpath:config/mailConfig.properties", encoding = "UTF-8") @Component public class MailConfig { public static String host; public static Integer port; public static String userName; public static String passWord; public static String emailForm; public static String timeout; public static String personal; public static String html; public static String subject; /** * @return Returns the host. */ public static String getHost() { return host; } /** * @param host * The host to set. */ @Value("${mail.host}") public void setHost(String host) { MailConfig.host = host; } /** * @return Returns the port. */ public static Integer getPort() { return port; } /** * @param port * The port to set. */ @Value("${mail.port}") public void setPort(Integer port) { MailConfig.port = port; } /** * @return Returns the userName. */ public static String getUserName() { return userName; } /** * @param userName * The userName to set. */ @Value("${mail.userName}") public void setUserName(String userName) { MailConfig.userName = userName; } /** * @return Returns the passWord. */ public static String getPassWord() { return passWord; } /** * @param passWord * The passWord to set. */ @Value("${mail.passWord}") public void setPassWord(String passWord) { MailConfig.passWord = passWord; } /** * @return Returns the emailForm. */ public static String getEmailForm() { return emailForm; } /** * @param emailForm * The emailForm to set. */ @Value("${mail.emailForm}") public void setEmailForm(String emailForm) { MailConfig.emailForm = emailForm; } /** * @return Returns the timeout. */ public static String getTimeout() { return timeout; } /** * @param timeout * The timeout to set. */ @Value("${mail.timeout}") public void setTimeout(String timeout) { MailConfig.timeout = timeout; } /** * @return Returns the personal. */ public static String getPersonal() { return personal; } /** * @param personal * The personal to set. */ @Value("${mail.personal}") public void setPersonal(String personal) { MailConfig.personal = personal; } /** * @return Returns the html. */ public static String getHtml() { return html; } /** * @param html * The html to set. */ @Value("${mail.html}") public void setHtml(String html) { MailConfig.html = html; } /** * @return Returns the subject. */ public static String getSubject() { return subject; } /** * @param subject * The subject to set. */ @Value("${mail.subject}") public void setSubject(String subject) { MailConfig.subject = subject; } }
Assign attributes (objects) through the springboot component initialization life cycle
@Component public class DSHWechatApiUtil extends DSHBaseController { @Autowired private IThirdPartyAuthDao thirdPartyAuthDao; private static IThirdPartyAuthDao staticThirdPartyAuthDao; @PostConstruct public void init() { staticThirdPartyAuthDao = thirdPartyAuthDao; } public static JSONObject getAuthorizerToken(String componentAccessToken, String authorizerAppid, String authorizerRefreshToken) { JSONObject returnObject = new JSONObject(); try { if (DSHUtils.isEmpty(componentAccessToken)) { componentAccessToken = staticThirdPartyAuthDao.selectWechatValue(DSHConstants.WECHAT_PARAMS.COMPONENT_ACCESS_TOKEN); } } catch (Exception e) { e.printStackTrace(); } return returnObject; } }
You can see that when the DSHWechatApiUtil tool class component is initialized, the method marked with the @PostConstruct annotation is called. Static variables are assigned values.
Through @Value() annotation
@Value() annotation will not inject attributes into static variables. By thinking in the first way, Then we must find a way to assign values when this component is initialized.
The first method is certainly possible. First write a property, then assign the value to the property through the @Value() annotation, and finally assign the value to the static property through the @PostConstruct annotation.
Here we have to use another method. The method here is to assign values through the set method. The attribute is statically modified, and the get method is also statically modified, but the set method cannot be statically modified. Use the @Value() annotation to modify the set method.
This will allow successful injection.
The third way is similar to the second way.
@ConfigurationProperties(prefix = ProjectConfig.PROJECT_PREFIX) public class ProjectConfig { public static final String PROJECT_PREFIX = "project"; /** * 系统版本号 */ private String version; /** * 项目名称 */ private String name; /** * 版权年份 */ private String copyrightYear; /** * 实例演示开关 */ private static boolean demoEnabled; /** * 获取地址ip开关 */ private static boolean addressEnabled; public String getVersion() { return version; } public void setVersion(String version) { this.version = version; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getCopyrightYear() { return copyrightYear; } public void setCopyrightYear(String copyrightYear) { this.copyrightYear = copyrightYear; } public boolean isDemoEnabled() { return demoEnabled; } public void setDemoEnabled(boolean demoEnabled) { ProjectConfig.demoEnabled = demoEnabled; } public static boolean isAddressEnabled() { return addressEnabled; } public void setAddressEnabled(boolean addressEnabled) { ProjectConfig.addressEnabled = addressEnabled; } }
As shown in the above code, as long as the set method is set to non-static, then this configuration class The static properties can be injected successfully.
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