加入下边依赖,帮助检测迁移过程中存在的问题
在Finchley 中,spring boot 升级到2.x ,其中配置文件中的参数需要全部小写,或者用 - 隔开.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-properties-migrator</artifactId>
<scope>runtime</scope>
</dependency>
1.父级包的导入变更
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath/>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.SR2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
2.eureka server
1.1 增强安全机制,
@EnableWebSecurity
class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf().ignoringAntMatchers("/eureka/**");
super.configure(http);
}
}
1.2 依赖变更
Dalostion版本
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka-server</artifactId>
</dependency>
Finchley版本
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
3.eureka client
依赖升级
Daloston
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
FinchleySR2
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
4.zuul
1.依赖升级
Daloston
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-zuul</artifactId>
</dependency>
FinchleySR2
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
- 关于 ZuulFallbackProvider ----> FallbackProvider
finchleySR2版本中, 对zuulFallbackeProvider进行了调整,
FinchleySR2版本: 能够获得更多的熔断的错误信息和路由信息
@Override
public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
return new ClientHttpResponse() {
@Override
public HttpStatus getStatusCode() throws IOException {
return HttpStatus.OK;
}
@Override
public int getRawStatusCode() throws IOException {
return HttpStatus.OK.value();
}
@Override
public String getStatusText() throws IOException {
return HttpStatus.OK.getReasonPhrase();
}
@Override
public void close() {
}
@Override
public InputStream getBody() throws IOException {
JSONObject body = new JSONObject();
body.put("code", ApiConstant.RESPONSE_SYSTEM_BUSY_ERROR_CODE);
body.put("msg", ApiConstant.RESPONSE_SYSTEM_BUSY_ERROR_MSG);
body.put("data", "");
return new ByteArrayInputStream(body.toJSONString().getBytes("UTF-8"));
}
@Override
public HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
//和body中的内容编码一致，否则容易乱码
headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
return headers;
}
};
}
Daloston版本:
@Override
public ClientHttpResponse fallbackResponse() {
return new ClientHttpResponse() {
@Override
public HttpStatus getStatusCode() throws IOException {
return HttpStatus.OK;
}
@Override
public int getRawStatusCode() throws IOException {
return HttpStatus.OK.value();
}
@Override
public String getStatusText() throws IOException {
return HttpStatus.OK.getReasonPhrase();
}
@Override
public void close() {
}
@Override
public InputStream getBody() throws IOException {
JSONObject body = new JSONObject();
body.put("code", ApiConstant.RESPONSE_SYSTEM_BUSY_ERROR_CODE);
body.put("msg", ApiConstant.RESPONSE_SYSTEM_BUSY_ERROR_MSG);
body.put("data", "");
return new ByteArrayInputStream(body.toJSONString().getBytes("UTF-8"));
}
@Override
public HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
//和body中的内容编码一致，否则容易乱码
headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
return headers;
}
};
}
3 zuul 关于ribbon的比较重要的配置, 主要在于文件上传
ribbon.ReadTimeout=60000
ribbon.ConnectTimeout=3000
5.Hystrix
1 依赖升级
Daloston
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-hystrix</artifactId>
</dependency>
FinchleySR2
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
</dependency>
6.Ribbon
1.依赖升级
Daloston
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
FinchleySR2
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
</dependency>
7.Feign
1.依赖
Daloston
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
FinchleySR2
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
- 配置
feign.httpclient.enabled=true
feign.okhttp.enabled=true
8.Spring boot admin
其他问题
该语句的过时的替代方式
management.security.enabled=false
在spring boot 2.x 中的替代方案为
management.endpoints.web.exposure.exclude=*
2. tomcat 中类的变更 ,在需要同事兼容http和https协议,同时开发多个端口的时候需要注意
EmbeddedServletContainerFactory----> TomcatServletWebServerFactory
3. spirng boot 2.x 不在兼容支持日志 org.apache.log4j.Logger
### mybatis 的支持
无变化
### spring boot redis的支持
1. 默认的链接客户端为lettuce
2. 配置链接的变更
```java
#主要是pool配置的链接参数名称变更
spring.redis.jedis.pool.max-active=300
spring.redis.jedis.pool.max-wait=10000
spring.redis.jedis.pool.max-idle=100
spring.redis.jedis.pool.min-idle=10
3.和spring cache
9.elastic-job
支持2.x
1.包的冲突问题, 冲突主要发生在zookeeper的版本上边
<dependencies>
<dependency>
<groupId>com.dmap</groupId>
<artifactId>schedule-job</artifactId>
<version>3.0.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
</dependency>
<dependency>
<groupId>com.dangdang</groupId>
<artifactId>elastic-job-lite-spring</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-client</artifactId>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Finchley.SR2</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.apache.zookeeper</groupId>
<artifactId>zookeeper</artifactId>
<version>3.4.6</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-recipes</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-framework</artifactId>
<version>2.10.0</version>
</dependency>
<dependency>
<groupId>org.apache.curator</groupId>
<artifactId>curator-client</artifactId>
<version>2.10.0</version>
</dependency>
</dependencies>
</dependencyManagement>
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