resttemplate

PagedResources<Resource and RestTemplate does not works

蓝咒 提交于 2019-12-06 14:21:33
问题 I am using Spring Boot REST example. In this I am using RestTemplate to call the endpoint which returns PagedResources<Resource<EmployeeDto>> Object. But when calling through RestTemplate , I did not get any contents. However this service is build in another microservice which easily accessible over web and can be call through Postman. @GetMapping("/{employeeId}/employees") public PagedResources<Resource<EmployeeDto>> getEmployyes(@PathVariable(name="employeeId") String employeeId,

How to change MediaType for MappingJacksonHttpMessageConverter in OAuth2RestTemplate

南笙酒味 提交于 2019-12-06 12:23:17
I have an application that is using Spring Source OAuth2 as s client to retrieve user data from a resource server and create a local user. I keep getting the error when the OAuth2ClientContextFilter tries to retrieve the token: org.springframework.web.client.RestClientException: Could not extract response: no suitable HttpMessageConverter found for response type [org.springframework.security.oauth2.common.OAuth2AccessToken] and content type [application/x-javascript;charset=utf-8] I understand the default MediaType is 'application/json' so I tried to customize the

How to use HttpComponentsClientHttpRequestFactory with RestTemplate efficiently?

北城余情 提交于 2019-12-06 11:11:06
I am using RestTemplate along with its factory HttpComponentsClientHttpRequestFactory in one of my projects. In this project, I need to make a Http url call to my server which is running a restful service which returns back the response as a JSON String. Below is my code - public class GetUserClientData { public String getData(KeyHolder keys) { return new HTTPRequestAccess(keys).makeHttpRequest(); } } Below is my class which wraps the HttpClient part - public class HTTPRequestAccess { // should this be static? private RestTemplate restTemplate; private KeyHolder keys; private int timeout;

6.4 Zuul的真正威力:过滤器

萝らか妹 提交于 2019-12-06 09:57:39
虽然通过Zuul网关代理所有请求确实可以简化服务调用,但是在想要编写应用于所有流经网关的服务调用的自定义逻辑时, Zuul的真正威力才发挥出来。在大多数情况下,这种自定义逻辑用于强制执行一组一致的应用程序策略,如安全性、日志记录和对所有服务的跟踪。 这些应用程序策略被认为是横切关注点,因为开发人员希望将它们应用于应用程序中的所有服务,而无需修改每个服务来实现它们。通过这种方式,Zuul过滤器可以按照与J2EE servlet过滤器或Spring Aspect类似的方式来使用。这种方式可以拦截大量行为,并且在原始编码人员意识不到变化的情况下,对调用的行为进行装饰或更改。servlet过滤器或Spring Aspect被本地化为特定的服务,而使用Zuul和Zuul过滤器允许开发人员为通过Zuul路由的所有服务实现横切关注点。 Zuul允许开发人员使用Zuul网关内的过滤器构建自定义逻辑。过滤器可用于实现每个服务请求在执行时都会经过的业务逻辑链。 Zuul支持以下3种类型的过滤器。 前置过滤器——前置过滤器在Zuul将实际请求发送到目的地之前被调用。前置过滤器通常执行确保服务具有一致的消息格式(例如,关键的HTTP首部是否设置妥当)的任务,或者充当看门人,确保调用 证(他们的身份与他们声称的一致)和授权(他们可以做他们请求做的)。 后置过滤器—

SpringCloud入门使用2

一个人想着一个人 提交于 2019-12-06 07:15:41
接上一条 建立一个生产者 子模块eureka-provider 1.在自己的pom.xml添加父子引用关系 2.在主模块的pom.xml添加子模块eureka-provider <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.zking</groupId> <artifactId>springcloud001</artifactId> <version>1.0-SNAPSHOT</version> </parent> <groupId>com.zking</groupId> <artifactId>eureka-provider</artifactId> <version>0.0.1-SNAPSHOT</version> <name

Springcloud使用入门

人盡茶涼 提交于 2019-12-06 07:09:58
Springcloud是一款微服务框架,它基于Springboot,可以使用它用来管理纵向拆分的项目,将一个个的小项目变成微服务。下面简单的搭建一个微服务,使用eureka组件实现注册中心,使用ribbon组件实现微服务调用,使用zuul网关实现真实服务地址和访问地址的分离,其他技术后续补充。 springcloud和nginx 前面学习过nginx,它除了可以实现动静分离,还可以实现负载均衡,即可以将项目做成分布式tomcat集群,前端访问可以随机或者按照权重值访问后端服务。但是nginx有一个小缺点,如果单台服务器出现问题、或者需要添加服务器,需要修改conf.xml配置文件,或某台服务器出现问题如何容错等,ngnix是无法实现。简单来说它缺少管理者的因子,需要人为''介入'',在这种情况下,springcloud就可以弥补nginx的不足,它不仅仅可以实现分布式,负载均衡,并且对微服务有管理、容错、监听的能力。 springcloud springcloud是spring家族的一员,它是一个微服务框架,用在大型分布式应用的开发,官网: https://spring.io/projects/spring-cloud ,除了springcloud外,其他比较出名的微服务框架还有dubbo。 如果一个项目比较小,直接使用springboot,或者ssm做成单体项目就可以

Spring Boot (1.2.5.RELEASE) Resttemplate Multipart File Upload UTF-8 Filename not possible

感情迁移 提交于 2019-12-06 06:43:10
I have a Spring Boot Rest Service which uploads a file via the RestTemplate exchange method. The upload is working as it should but there is a problem with utf-8 filenames which for example contain german umlauts like äöü. When uploading a file from a HTML5 App it is working without any problem so it is not a problem at the receiving service. Without setting any encoding for the MultipartCharset the umlauts are replaced by "?" (e.g. Überschrift.txt gets ?berschrift.txt), as US-ASCII is used for the filename encoding. I tried setting the MultipartCharset to UTF-8 with this code: (

How to wait on RestTemplate responses on shutdown?

孤街醉人 提交于 2019-12-06 04:56:14
问题 I'm using spring with RestTemplate to send POST requests to a webserver. When my application is shut down (eg undeployed from tomcat), the shutdown should be delayed until all pending responses are received (within a timeout). The restTemplate uses HttpComponentsClientHttpRequestFactory under the hood. Question: how can I tell spring to delay the shutdown? @PreDestroy could be one possibility, but how can I detect pending requests on the restTemplate? 回答1: I think there is no out of the box

Jackson Json deserialization of an object to a list

僤鯓⒐⒋嵵緔 提交于 2019-12-06 03:55:49
问题 I'm consuming a web service using Spring's RestTemplate and deserializing with Jackson . In my JSON response from the server, one of the fields can be either an object or a list. meaning it can be either "result": [{}] or "result": {} . Is there a way to handle this kind of things by annotations on the type I'm deserializing to ? define the member as an array[] or List<> and insert a single object in case of the second example ? Can I write a new HttpMessageConverter that will handle it ? 回答1

RestTemplate and acessing json

爱⌒轻易说出口 提交于 2019-12-06 03:55:33
问题 I have seen the responses from many other posts but would like to understand if there is a better way to do the same thing. Requirement:- I am using restTemplate to talk to web service which returns JSON output which is dynamic. As a consumer I don't want to access all fields but is interested in few of them. I am using Spring framework with Jackson parser and found the way of accessing it String response = restTemplate.getForObject(targetUrl, String.class); System.out.println(response);