java - 带有Jersey客户端的BASIC身份验证的Base64编码异常

我有在启用了BASIC身份验证的Wildfly 9上运行的Jersey客户端。通常，此方法效果很好，但是当使用带有特殊字符（例如德语变音符）的密码时，会出现此异常，与Base64编码有关：

Caused by: java.lang.ArrayIndexOutOfBoundsException: 255
        at org.glassfish.jersey.internal.util.Base64.encode(Base64.java:112)
        at org.glassfish.jersey.internal.util.Base64.encodeAsString(Base64.java:160)
        at org.glassfish.jersey.client.filter.HttpBasicAuthFilter.<init>(HttpBasicAuthFilter.java:98)
        at org.glassfish.jersey.client.filter.HttpBasicAuthFilter.<init>(HttpBasicAuthFilter.java:72)

知道我做错了什么吗？

最佳答案

这是known bug。

解决方法是，可以直接设置Authorization标头，而不是使用HttpAuthenticationFeature.HTTP_AUTHENTICATION_BASIC_USERNAME和HttpAuthenticationFeature.HTTP_AUTHENTICATION_BASIC_PASSWORD属性。

旧代码：

Invocation.Builder builder = …;
builder
    .property(HttpAuthenticationFeature.HTTP_AUTHENTICATION_BASIC_USERNAME, username)
    .property(HttpAuthenticationFeature.HTTP_AUTHENTICATION_BASIC_PASSWORD, password);

新代码：

import java.nio.charset.StandardCharsets;
import java.util.Base64;
import javax.ws.rs.core.HttpHeaders;

// …
    builder.header(HttpHeaders.AUTHORIZATION, calculateAuthentication(username, password));
// …

private String calculateAuthentication(final String username, final byte[] password) {
    final byte[] prefix = (username + ":").getBytes(StandardCharsets.UTF_8);
    final byte[] usernamePassword = new byte[prefix.length + password.length];
    System.arraycopy(prefix, 0, usernamePassword, 0, prefix.length);
    System.arraycopy(password, 0, usernamePassword, prefix.length, password.length);
    return "Basic " + Base64.getEncoder().encodeToString(usernamePassword);
}