Java 具有自定义转义的Jackson对象映射器对字段长度有限制
带有自定义转义的Jackson对象映射器对于大于2000个字符的字符串返回错误输出 我正在使用jackson从数据中转义一些特殊字符(,“,”)。我的输入是Java 具有自定义转义的Jackson对象映射器对字段长度有限制,java,json,jackson,escaping,Java,Json,Jackson,Escaping,带有自定义转义的Jackson对象映射器对于大于2000个字符的字符串返回错误输出 我正在使用jackson从数据中转义一些特殊字符(,“,”)。我的输入是的映射。除了字符串长度大于2000个字符的特殊输入外,它工作正常 下面是我使用Jackson的主要功能 Map<Object,Object> specialMap = new HashMap<>(); specialMap.put("id", "482863,482863,482863,482863,4
的映射。除了字符串长度大于2000个字符的特殊输入外,它工作正常
下面是我使用Jackson的主要功能
Map<Object,Object> specialMap = new HashMap<>();
specialMap.put("id", "482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863");
String result = null;
ObjectMapper objectMapper = new ObjectMapper();
try {
//Escaping Special Characters
objectMapper.getJsonFactory().setCharacterEscapes(new XMLCharacterEscapes());
result = objectMapper.writeValueAsString(specialMap);
} catch (IOException e) {
e.printStackTrace();
}
EscapedSerializableString类
public class XMLCharacterEscapes extends CharacterEscapes {
private final int[] asciiEscapes;
public XMLCharacterEscapes()
{
// start with set of characters known to require escaping (double-quote, backslash etc)
int[] esc = CharacterEscapes.standardAsciiEscapesForJSON();
// Five chars are predefined in XML and require escaping
esc['<'] = CharacterEscapes.ESCAPE_CUSTOM;
esc['>'] = CharacterEscapes.ESCAPE_CUSTOM;
esc['&'] = CharacterEscapes.ESCAPE_CUSTOM;
esc['\''] = CharacterEscapes.ESCAPE_CUSTOM;
esc['\"'] = CharacterEscapes.ESCAPE_CUSTOM;
asciiEscapes = esc;
}
// this method gets called for character codes 0 - 127
@Override public int[] getEscapeCodesForAscii() {
return asciiEscapes;
}
// and this for others; we don't need anything special here
@Override public SerializableString getEscapeSequence(int ch) {
return new EscapedSerializableString(ch);
}
}
public class EscapedSerializableString implements SerializableString {
private final String stringValue;
public EscapedSerializableString(int i) {
stringValue = Character.toString((char) i);
}
@Override
public String getValue() {
return StringEscapeUtils.escapeXml11(stringValue);
}
@Override
public int charLength() {
return stringValue.length();
}
@Override
public char[] asQuotedChars() {
return new char[0];
}
@Override
public byte[] asUnquotedUTF8() {
return new byte[0];
}
@Override
public byte[] asQuotedUTF8() {
return new byte[0];
}
}
下面是一个示例,其中包含groovy脚本中的代码的工作版本
代码中有几个语法错误,您还应该检查您使用的是哪个版本的Jackson。
我不明白在输入字符串中应该转义哪些值,所以我添加了一个标记来转义
import org.codehaus.jackson.SerializableString
import org.codehaus.jackson.io.CharacterEscapes
/**
* Created by Marc Nuri on 2015-12-23.
*/
@Grab('org.codehaus.jackson:jackson-core-asl:1.9.13')
@Grab('org.codehaus.jackson:jackson-mapper-asl:1.9.13')
@Grab('org.apache.commons:commons-lang3:3.4')
Map<Object,Object> specialMap = new HashMap<>();
specialMap.put("id", "<EscapedTag>482863</EscapedTag>,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863");
String result = null;
org.codehaus.jackson.map.ObjectMapper objectMapper = new org.codehaus.jackson.map.ObjectMapper();
try {
//Escaping Special Characters
objectMapper.getJsonFactory().setCharacterEscapes(new CharacterEscapes() {
private static final int[] esc;
static{
esc = CharacterEscapes.standardAsciiEscapesForJSON();
esc[(int)'<'] = CharacterEscapes.ESCAPE_CUSTOM;
esc[(int)'>'] = CharacterEscapes.ESCAPE_CUSTOM;
esc[(int)'&'] = CharacterEscapes.ESCAPE_CUSTOM;
esc[(int)'\''] = CharacterEscapes.ESCAPE_CUSTOM;
esc[(int)'\"'] = CharacterEscapes.ESCAPE_CUSTOM;
}
@Override
int[] getEscapeCodesForAscii() {
return esc
}
@Override
SerializableString getEscapeSequence(final int i) {
return new SerializableString() {
private final String stringValue = Character.toString((char) i);
@Override
public String getValue() {
return org.apache.commons.lang3.StringEscapeUtils.escapeXml11(stringValue);
}
@Override
public int charLength() {
return stringValue.length();
}
@Override
public char[] asQuotedChars() {
return new char[0];
}
@Override
public byte[] asUnquotedUTF8() {
return new byte[0];
}
@Override
public byte[] asQuotedUTF8() {
return new byte[0];
}
}
}
});
result = objectMapper.writeValueAsString(specialMap);
println result;
} catch (IOException e) {
e.printStackTrace();
}
嗨,马克,看起来我用的是老版本的杰克逊和人物越狱。现在问题解决了。
{"id":"<EscapedTag>482863</EscapedTag>,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863,482863"}