in aws-serverless-java-container-core/src/main/java/com/amazonaws/serverless/proxy/internal/servlet/AwsProxyHttpServletRequestReader.java [82:98]
private String getContentTypeWithCharset(String headerValue, ContainerConfig config) {
if (headerValue == null || "".equals(headerValue.trim())) {
return headerValue;
}
if (headerValue.contains("charset=")) {
return headerValue;
}
String newValue = headerValue;
if (!headerValue.trim().endsWith(";")) {
newValue += "; ";
}
newValue += "charset=" + config.getDefaultContentCharset();
return newValue;
}