Springboog集成oracle数据源（原先已经配置druid项目可以跑起来）
1：pom中添加feign所需依赖
```java
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
<dependency>
<groupId>com.netflix.feign</groupId>
<artifactId>feign-httpclient</artifactId>
<version>RELEASE</version>
</dependency>
```
2. 启动类添加@EnableFeignClients注解表示启用feign功能
3. ##### 创建自定义请求拦截器
template.header("access_token", "token")直接在header中添加参数，这种一般的比较少
常用的是在Servlet中获取参数再进行feign传递
1.
```java
package com.bosssoft.gp.portal.center.config;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;
/**
* @author pei
* @description
* @createDate 2019/3/18
*/
@Component
public class RequestInterceptors implements RequestInterceptor {
/* 直接添加参数，这种不常用
@Override
public void apply(RequestTemplate template) {
template.header("access_token", "token");
}*/
@Override
public void apply(RequestTemplate requestTemplate) {
ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder
.getRequestAttributes();
//在servlet中获取参数
HttpServletRequest request = attributes.getRequest();
Enumeration<String> headerNames = request.getHeaderNames();
if (headerNames != null) {
while (headerNames.hasMoreElements()) {
String name = headerNames.nextElement();
String values = request.getHeader(name);
//传递参数
requestTemplate.header(name, values);
}
}
}
}
```
创建feign接口
```java
package com.bosssoft.gp.portal.center.service.api;
import com.bosssoft.gp.portal.center.config.RequestInterceptors;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
//value为服务名,配置拦截器
@FeignClient(value="gp-pei", configuration = RequestInterceptors.class)
public interface EurekaClientFeign {
@RequestMapping(value= "client")
//参数为name
String sayHiFromClientEureka(@RequestParam(value = "name") String name);
}
```
创建controller调用
```java
@Resource
EurekaClientFeign eurekaClientFeign;
@RequestMapping(value = "/feignClient")
@ResponseBody
public void feignClient() {
String string = eurekaClientFeign.sayHiFromClientEureka("pei");
System.out.println(string);
}
}
```
创建被调用的客户端controller
```java
@RequestMapping("client")
@ResponseBody
public void client(HttpServletRequest request,String name) {
System.out.println("name:"+name);
String token = request.getHeader("access_token");
System.out.println(token+"token");
Map<String, Object> jwtMap = GpJwtUtils.parseTokenByJKSFile(token, "public.txt");
String userId = (String) jwtMap.get("userId");
System.out.println("id:"+userId);
}
```
##### 7 .测试
ip:port/eignClient
参数 ：access_token
```
name:pei
eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.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.hhjM3wSqwSOU2etPE73D578Kigrv9s1ZdEwwmrrfURtEbCnFQQi3n1IWwXUJuw_5T5vxYCmfJnc_1bJwkEq5-Df3-BejQBlJgGsMW-RwFVSTxxKddFxJTPiAaUDDOpvj5PjBo2Nf-0SLBPINXpgBJzbgqD4fmAFje-NQhA-VgreMC_nUNBpd5JdWQNgJHHIMj7KSNrr9UbmNnMIbJkF007v7W6gA0uJcr_RG81rG9Jkypw1_7N4cnd6zQPrdCXLh-8KRdTEF5aeEUrwalaE6Z0MkFXR26fJKgEJ_J4KD_HG7uFBmruqPd0-kkyKgKL_DL8Iw8PdKuwAWSprAvrEyAgtoken
id:f4e2e171-be39-4599-9642-ad48f22ea752
```
