AWS ec2 的奇怪编码问题 - java

Question

我有一个 Java Spring 启动应用程序，它在本地响应编码良好的文本：

Battle Is the Lord's by Rebecca St. James (Ft. Brandon Lake)

但是当我运行我的 AWS 实例 (ec2) 上的应用程序时 returns:

Battle Is the Lord��s by��Rebecca��St. James (Ft.��Brandon��Lake)

这是我的 apache HttpClient 设置：

...
public class HttpClientHandler {

    public  String getHandler(final String url) {
        return getHandler(url, null);
    }

    public  String getHandler(final String url, final String authHeader) {

        final StringBuilder apiResponse = new StringBuilder();

        final HttpClient client = HttpClientBuilder.create().build();
        log.info("Get url: {}, with authHeader: {}", url, authHeader);
        final HttpGet request = new HttpGet(url);
        request.addHeader("Content-Type", "application/json");

        if (authHeader != null && !authHeader.isEmpty()) {
            request.addHeader("Authorization", authHeader);
        }


        try {
            final HttpResponse response = client.execute(request);
            log.info("Response Code : {}", response.getStatusLine().getStatusCode());
            final BufferedReader rd = new BufferedReader(
                    new InputStreamReader(response.getEntity().getContent()));

            String line;
            while ((line = rd.readLine()) != null) {
                apiResponse.append(line);
            }
        } catch (final Exception e) {
            e.printStackTrace();
        }
        return apiResponse.toString();
    }

}

我特别困惑，因为我运行在本地运行应用程序时看到它很好。

感谢您的帮助，

瑞克

Answer 1

InputStreamReader可以接受一个charset参数。如果未指定，则将使用运行 JVM 的语言环境来确定字符集。解码消息时，它的编码必须与输入编码具有相同的格式。

下面的例子都是用Kotlin写的但是思路是一样的

从一个字符集转换为另一个字符集：

val s = "Battle Is the Lord's by Rebecca St. James (Ft. Brandon Lake)"
val inputStream = s.byteInputStream(Charsets.UTF_8)
val reader = InputStreamReader(inputStream, Charsets.UTF_16)
val lines = BufferedReader(reader).readLines()
println(lines)

将return[??????????]

读取相同字符集中的数据将导致正确读取数据

val s = "your initial string"
val inputStream = s.byteInputStream(Charsets.UTF_8)
val reader = InputStreamReader(inputStream, Charsets.UTF_16)
val lines = BufferedReader(reader).readLines()
println(lines)

会写[your initial string]

AWS ec2 的奇怪编码问题 - java

Weird encoding issue with AWS ec2 - java

java

amazon-ec2

character-encoding

amazon-web-services

spring-boot