springboot集成gzip和zip数据压缩传输-满足2k数据自动压缩(适用大数据信息传输)-1）、springboot的gzip压缩-满足2k数据自动压缩

1.1后端压缩

 @GetMapping(value = "/data", produces = "application/json")
    public void getData(HttpServletResponse response) throws IOException {
        String data = "your large data here"; // Replace with actual large data

        response.setHeader("Content-Encoding", "gzip");
        response.setContentType("application/json");

        try (OutputStream os = response.getOutputStream();
             GZIPOutputStream gzipOutputStream = new GZIPOutputStream(os)) {
            gzipOutputStream.write(data.getBytes());
        }
    }

1.2前端解压

fetch('/api/data', {
    headers: {
        'Accept-Encoding': 'gzip'
    }
})
.then(response => {
    if (response.ok) {
        return response.blob();
    }
    throw new Error('Network response was not ok.');
})
.then(blob => {
    const reader = new FileReader();
    reader.onload = () => {
        const decompressedData = pako.inflate(reader.result, { to: 'string' });
        console.log(JSON.parse(decompressedData));
    };
    reader.readAsArrayBuffer(blob);
})
.catch(error => {
    console.error('There was a problem with your fetch operation:', error);
});

1.3 满足最小响应大小（2KB）和指定MIME类型的响应进行GZIP压缩

将为JSON、XML、文本和JavaScript以及CSS等类型的响应启用GZIP压缩，并且响应大小至少需要2KB才会被压缩

yml配置

# application.yml
server:
  compression:
    enabled: true
    mime-types: application/json,application/xml,text/html,text/xml,text/plain,application/javascript,text/css
    min-response-size: 2048

自定义配置或者使用Java配置

创建了一个ShallowEtagHeaderFilter bean和一个GzipCompressingFilter bean，后者会对满足最小响应大小（2KB）和指定MIME类型的响应进行GZIP压缩

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.web.filter.ShallowEtagHeaderFilter;
 
import java.util.Arrays;
import java.util.List;
 
@Configuration
public class GzipConfig {
 
    @Bean
    public ShallowEtagHeaderFilter shallowEtagHeaderFilter() {
        return new ShallowEtagHeaderFilter();
    }
 
    @Bean
    public GzipCompressingFilter gzipCompressingFilter() {
        GzipCompressingFilter filter = new GzipCompressingFilter();
        filter.setMinGzipSize(2048);
        List<String> mimeTypes = Arrays.asList("text/html", "text/xml", "text/plain", "text/css", "application/javascript", "application/json", "application/xml");
        filter.setMimeTypes(mimeTypes);
        return filter;
    }
}