OpenFeign数据压缩

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程序员朱永胜 2024-01-12 10:25:01 ©著作权

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<section data-tool="mdx editor" data-website="https://editor.runjs.cool/" class="default"><section data-tool="mdx 编辑器" data-website="https://editor.runjs.cool/" class="markdown-body" components="[object Object]" style="color: #595959; font-size: 15px; font-family: -apple-system, system-ui, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif; background-image: linear-gradient( 90deg, rgba(60, 10, 30, 0.04) 3%, rgba(0, 0, 0, 0) 3% ), linear-gradient(360deg, rgba(60, 10, 30, 0.04) 3%, rgba(0, 0, 0, 0) 3%); background-size: 20px 20px; background-position: center center; padding: 0 12px;"><blockquote data-line="1" style="background: #fff9f9; margin: 2em 0; padding: 2px 20px; border-left: 4px solid #b2aec5;"> 有的时候博客内容会有变动，首发博客是最新的，其他博客地址可能会未同步,认准<code data-line="1" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">https://blog.zysicyj.top</code> </blockquote> <blockquote data-line="3" style="background: #fff9f9; margin: 2em 0; padding: 2px 20px; border-left: 4px solid #b2aec5;"> 全网最细面试题手册，支持艾宾浩斯记忆法。这是一份最全面、最详细、最高质量的 java面试题，不建议你死记硬背，只要每天复习一遍，有个大概印象就行了。 https://store.amazingmemo.com/chapterDetail/1685324709017001` </blockquote> <figure><img src="https://blog-1253652709.cos.ap-guangzhou.myqcloud.com//picgo/202312312342374.png" alt="image.png" data-line="7" style="max-width: 100%;"><figcaption style="text-align: center; font-size: 14px;">image.png</figcaption></figure> 在OpenFeign中，数据压缩是通过配置Feign客户端来实现的。OpenFeign支持对传输的数据进行压缩，以减少网络传输的数据量，提高传输效率。下面将详细介绍在OpenFeign中如何配置和使用数据压缩。 <h3 data-line="12" style="padding: 30px 0; margin: 0; color: #135ce0; font-size: 16px;">1. 启用OpenFeign的数据压缩</h3> 要在OpenFeign中启用数据压缩，需要进行以下配置： <h4 data-line="16" style="padding: 30px 0; margin: 0; color: #135ce0;">1.1 添加依赖</h4> 首先，需要在项目中添加相应的依赖，通常是在<code data-line="18" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">pom.xml</code>文件中添加以下依赖： <pre data-line="31" class="language-xml" style="overflow-x: auto; -webkit-overflow-scrolling: touch; position: relative; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; font-size: 1em; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-break: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; border: 1px solid #2a4555; border-radius: 5px; margin: 1em 0; overflow: auto; padding: 0;"><section class="code__header" style="display: flex; justify-content: space-between; align-items: center; font-size: 12px; height: 30px; line-height: 30px;"> </section><pre style="overflow-x: auto; font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; overflow: auto; -webkit-overflow-scrolling: touch; position: relative; line-height: 1.75; margin: 0;" data-title="true"><code class="language-xml code-highlight" data-line="31" style="float: left; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; min-width: 100%; font-size: 12px; word-break: normal; display: block; flex: none; padding: 12px; padding-top: 0; max-width: unset;"><dependency> <groupId>io.github.openfeign</groupId> <artifactId>feign-core</artifactId> <version>10.14</version>  </dependency> <dependency> <groupId>io.github.openfeign</groupId> <artifactId>feign-gson</artifactId> <version>10.14</version>  </dependency> </code></pre></pre> <h4 data-line="33" style="padding: 30px 0; margin: 0; color: #135ce0;">1.2 配置Feign客户端</h4> 在Feign客户端的配置类中，需要添加对数据压缩的配置。可以通过<code data-line="35" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">Feign.builder()</code>方法来配置Feign客户端，启用数据压缩功能。 <pre data-line="70" class="language-java" style="overflow-x: auto; -webkit-overflow-scrolling: touch; position: relative; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; font-size: 1em; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-break: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; border: 1px solid #2a4555; border-radius: 5px; margin: 1em 0; overflow: auto; padding: 0;"><section class="code__header" style="display: flex; justify-content: space-between; align-items: center; font-size: 12px; height: 30px; line-height: 30px;"> </section><pre style="overflow-x: auto; font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; overflow: auto; -webkit-overflow-scrolling: touch; position: relative; line-height: 1.75; margin: 0;" data-title="true"><code class="language-java code-highlight" data-line="70" style="float: left; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; min-width: 100%; font-size: 12px; word-break: normal; display: block; flex: none; padding: 12px; padding-top: 0; max-width: unset;">import feign.Feign; import feign.codec.Decoder; import feign.codec.Encoder; import feign.gson.GsonDecoder; import feign.gson.GsonEncoder; import feign.okhttp.OkHttpClient; import feign.okhttp.OkHttpClient.Builder; import okhttp3.Interceptor; import okhttp3.Response; import okhttp3.logging.HttpLoggingInterceptor; import java.io.IOException; import java.util.zip.GZIPInputStream; public class FeignClientConfiguration { public MyFeignClient myFeignClient() { return Feign.builder() .client(new OkHttpClient(new Builder().addInterceptor(new GzipRequestInterceptor()).build())) .encoder(new GsonEncoder()) .decoder(new GsonDecoder()) .target(MyFeignClient.class, "http://example.com"); } static class GzipRequestInterceptor implements Interceptor { @Override public Response intercept(Chain chain) throws IOException { okhttp3.Request request = chain.request().newBuilder() .addHeader("Accept-Encoding", "gzip") .build(); return chain.proceed(request); } } } </code></pre></pre> 在上述代码中，我们通过<code data-line="72" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">Feign.builder()</code>方法配置了Feign客户端，并使用<code data-line="72" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">OkHttpClient</code>作为HTTP客户端。在<code data-line="72" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">GzipRequestInterceptor</code>中，我们添加了对GZIP压缩的支持，通过添加<code data-line="72" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">Accept-Encoding: gzip</code>的请求头来告知服务端可以接受GZIP压缩的响应。 <h3 data-line="74" style="padding: 30px 0; margin: 0; color: #135ce0; font-size: 16px;">2. 数据压缩的使用示例</h3> 一旦配置了Feign客户端以启用数据压缩，接下来就可以像平常一样使用Feign来进行服务调用。OpenFeign会在请求中添加<code data-line="76" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">Accept-Encoding: gzip</code>的请求头，服务端在响应时会根据这个请求头来判断是否需要对响应数据进行GZIP压缩。 <pre data-line="85" class="language-java" style="overflow-x: auto; -webkit-overflow-scrolling: touch; position: relative; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; font-size: 1em; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-break: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; border: 1px solid #2a4555; border-radius: 5px; margin: 1em 0; overflow: auto; padding: 0;"><section class="code__header" style="display: flex; justify-content: space-between; align-items: center; font-size: 12px; height: 30px; line-height: 30px;"> </section><pre style="overflow-x: auto; font-family: Operator Mono, Consolas, Monaco, Menlo, monospace; overflow: auto; -webkit-overflow-scrolling: touch; position: relative; line-height: 1.75; margin: 0;" data-title="true"><code class="language-java code-highlight" data-line="85" style="float: left; color: #d6e7ff; background: #030314; text-shadow: none; font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace; line-height: 1.5; letter-spacing: .2px; white-space: pre; word-spacing: normal; word-wrap: normal; text-align: left; -moz-tab-size: 4; -o-tab-size: 4; tab-size: 4; -webkit-hyphens: none; -moz-hyphens: none; -ms-hyphens: none; hyphens: none; min-width: 100%; font-size: 12px; word-break: normal; display: block; flex: none; padding: 12px; padding-top: 0; max-width: unset;">import feign.RequestLine; public interface MyFeignClient { @RequestLine("GET /users/{id}") User getUserById(@Param("id") Long id); } </code></pre></pre> 在上述代码中，我们定义了一个Feign客户端接口<code data-line="87" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">MyFeignClient</code>，并在接口的方法上使用了<code data-line="87" style="word-break: break-word; border-radius: 2px; overflow-x: auto; background-color: #fff5f5; color: #ff502c; font-size: 0.87em; padding: 0.065em 0.4em; max-width: unset;">@RequestLine</code>注解来描述服务调用的细节。 <h3 data-line="89" style="padding: 30px 0; margin: 0; color: #135ce0; font-size: 16px;">3. 数据压缩的注意点</h3> <ul data-line="92" style="padding-left: 28px; list-style: disc outside;"> <li data-line="91" style="line-height: 2; color: #595959; margin-bottom: 0; list-style: inherit;">服务端支持：在使用OpenFeign的数据压缩功能时，需要确保服务端支持对数据的压缩和解压缩，以确保数据的正确传输和解析。</li> <li data-line="92" style="line-height: 2; color: #595959; margin-bottom: 0; list-style: inherit;">性能影响：数据压缩会增加服务端和客户端的计算负担，需要评估压缩和解压缩对系统性能的影响，以及是否值得在性能和带宽之间进行权衡。</li> </ul> 通过以上配置和示例，我们可以在OpenFeign中启用数据压缩，并对传输的数据进行压缩，以提高网络传输效率。</section></section>