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1、java.lang.Exception: Connector attribute SSLCertificateFile must be defined when using SSL with APR
原因： 使用tomcat7调整协议从http到https后，启动tomcat时报的错，原本protocol写的是HTTP/1.1
解决： tomcat7默认使用的是APR协议，更改8443端口的protocol协议为org.apache.coyote.http11.Http11Protocol
修改conf/server.xml
<Connector SSLEnabled="true" acceptCount="100" clientAuth="false"
disableUploadTimeout="true" enableLookups="false" maxThreads="150"
port="8443" keystoreFile="D:\java_code\tomcat\tomcat.keystore" keystorePass="1q2w3e4r"
protocol="org.apache.coyote.http11.Http11Protocol" scheme="https"
secure="true" sslProtocol="TLS" />
2、org.hibernate.InstantiationException: No default constructor for entity: : com.su.shoppingb.domain.Cart
解决： Cart实体类没有默认的构造方法，添加上即可
3、java.nio.charset.MalformedInputException: Input length = 1 或者java.nio.charset.MalformedInputException: Input length = 2
解决： application.yml中 编码格式问题，重设为GBK即可；整个项目是UTF-8
mybatis: mapper-locations: classpath:/mappers/*.xml 填写完整
4、在mapper.xml中，resultType指向实体类，select出的结果别名要和实体类字段一样
5、Cannot find template location: classpath:/templates/ (please add some templates or check your Thymeleaf configuration)
解决： 无关紧要不理会，或者在templates目录下添加文件即可解决
6、保存用户时，java.sql.SQLSyntaxErrorException: Table ‘wx_driving.hibernate_sequence’ doesn’t exist
解决： 在该实体类的主键上加上
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
7、微信小程序前端获取手机号信息时，“getPhoneNumber:fail Error: 该 appid 没有权限”
解决： 小程序号需要企业注册小程序并认证
8、HikariPool-1 - Failed to validate connection com.mysql.cj.jdbc.ConnectionImpl@7bd3fbc (No operations allowed after connection closed.). Possibly consider using a shorter maxLifetime value.
解决：
在application.xml中添加spring.datasource.hikari
hikari:
connection-timeout: 60000
validation-timeout: 3000
idle-timeout: 60000
login-timeout: 5
max-lifetime: 60000
maximum-pool-size: 10
minimum-idle: 10
read-only: false
添加连接生命周期
9、后端服务换了新的appid后，获取openid出现 {“errcode”:40029,“errmsg”:“invalid code, hints: [ req_id: 0Hga3aMre- ]”}
解决： 前端和后端统一使用新的appid和appsecret
11、获取手机号时，调接口：org.springframework.web.bind.MissingServletRequestParameterException: Required String parameter ‘encryptedData’ is not present
解决： 前端请求加： header: {
“Content-Type”: “application/x-www-form-urlencoded”
},
12、java.security.NoSuchAlgorithmException: Cannot find any provider supporting AES/CBC/PKCS7Padding
解决： AES/CBC/PKCS7Padding改成AES/CBC/PKCS5Padding
13、启用https org.springframework.context.ApplicationContextException: Failed to start bean ‘webServerStartStop’; nested exception is org.springframework.boot.web.server.WebServerException: Unable to start embedded Tomcat server
解决： springboot2.x没有EmbeddedServletContainerFactory，已替换为TomcatServletWebServerFactory 添加以下代码：
@Bean
public WebServerFactoryCustomizer<ConfigurableWebServerFactory> webServerFactoryCustomizer(){
return new WebServerFactoryCustomizer<ConfigurableWebServerFactory>() {
@Override
public void customize(ConfigurableWebServerFactory factory) {
factory.setPort(443);
}
};
}
/**
* @Description: 将http重定向至https
* @param: "[]"
* @Return: org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory
* @Author: supenghui
* @Date: 2021/1/18 12:46
*/
@Bean
public TomcatServletWebServerFactory tomcatServletWebServerFactory(){
TomcatServletWebServerFactory tomcat =new TomcatServletWebServerFactory(){
@Override
protected void postProcessContext(Context context) {
SecurityConstraint securityConstraint=new SecurityConstraint();
securityConstraint.setUserConstraint("CONFIDENTIAL");
SecurityCollection collection=new SecurityCollection();
collection.addPattern("/");
securityConstraint.addCollection(collection);
context.addConstraint(securityConstraint);
}
};
tomcat.addAdditionalTomcatConnectors(createHttpConnector());
return tomcat;
}
private Connector createHttpConnector() {
Connector connector = new Connector("org.apache.coyote.http11.Http11NioProtocol");
connector.setScheme("http");
connector.setSecure(false);
connector.setPort(80);
connector.setRedirectPort(443);
return connector;
}
14、测试微信小程序使用高德地图出现 fail url not in domain list
解决： 使用高德地图服务，需要把高的域名加到request中；域名： https://restapi.amap.com
15、各种图案的样式：https://css-tricks.com/the-shapes-of-css/
16、org.springframework.dao.InvalidDataAccessApiUsageException: No EntityManager with actual transaction available for current thread - cannot reliably process ‘remove’ call; nested exception is javax.persistence.TransactionRequiredException: No EntityManager with actual transaction available for current thread - cannot reliably process ‘remove’ call
解决： 由于在需要事务的方法上，没有开启事务，所在在方法上添加@Transactional
17、Error No.1130 Host ‘192.168.25.3’ is not allowed to connect to this MySQL server
解决：
- 改表法
可能是你的帐号不允许从远程登陆，只能在localhost。这个时候只要在localhost的那台电脑登入MySQL后，更改"MySQL"数据库"user"表里的"host"项，将"localhost"改成"%"
mysql -u root -pyourpwd
mysql>use mysql;
mysql>update user set host = ‘%’ where user =‘root’;
mysql>select host, user from user;
18、调用微信支付接口时，total_fee必须为Integer
author：su1573
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