Java 新字符串的签名是什么（字节[]）

从JNI调用String.java的构造函数时出错

错误：

java.lang.NoSuchMethodError:Ljava/lang/String类中没有名为“”签名为“（[B）Ljava/nio/ByteBuffer；”的方法

爪哇：

JNI：

调用新字符串（字节[]b）String.java的方法（此处有错误，可能签名错误？）

---

我的问题在遵循EJP的指示后得到解决，谢谢您，先生

const char*SIG_NEW_STRING=“（[B）V”

为了获得String.java类中函数的签名，我使用javap如下：

C:\Program Files\Java\jdk1.8.0_65\bin>javap -s java.lang.String

或

结果:

Compiled from "String.java"
public final class java.lang.String implements java.io.Serializable, java.lang.Comparable<java.lang.String>, java.lang.CharSequence {
  public static final java.util.Comparator<java.lang.String> CASE_INSENSITIVE_ORDER;
    descriptor: Ljava/util/Comparator;
  public java.lang.String();
    descriptor: ()V

  public java.lang.String(java.lang.String);
    descriptor: (Ljava/lang/String;)V

  public java.lang.String(char[]);
    descriptor: ([C)V

  public java.lang.String(char[], int, int);
    descriptor: ([CII)V

  public java.lang.String(int[], int, int);
    descriptor: ([III)V

  public java.lang.String(byte[], int, int, int);
    descriptor: ([BIII)V

  public java.lang.String(byte[], int);
    descriptor: ([BI)V

  public java.lang.String(byte[], int, int, java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: ([BIILjava/lang/String;)V

  public java.lang.String(byte[], int, int, java.nio.charset.Charset);
    descriptor: ([BIILjava/nio/charset/Charset;)V

  public java.lang.String(byte[], java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: ([BLjava/lang/String;)V

  public java.lang.String(byte[], java.nio.charset.Charset);
    descriptor: ([BLjava/nio/charset/Charset;)V

  public java.lang.String(byte[], int, int);
    descriptor: ([BII)V

  public java.lang.String(byte[]);
    descriptor: ([B)V

  public java.lang.String(java.lang.StringBuffer);
    descriptor: (Ljava/lang/StringBuffer;)V

  public java.lang.String(java.lang.StringBuilder);
    descriptor: (Ljava/lang/StringBuilder;)V

  public int length();
    descriptor: ()I

  public boolean isEmpty();
    descriptor: ()Z

  public native char charAt(int);
    descriptor: (I)C

  public int codePointAt(int);
    descriptor: (I)I

  public int codePointBefore(int);
    descriptor: (I)I

  public int codePointCount(int, int);
    descriptor: (II)I

  public int offsetByCodePoints(int, int);
    descriptor: (II)I

  public void getChars(int, int, char[], int);
    descriptor: (II[CI)V

  public void getBytes(int, int, byte[], int);
    descriptor: (II[BI)V

  public byte[] getBytes(java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: (Ljava/lang/String;)[B

  public byte[] getBytes(java.nio.charset.Charset);
    descriptor: (Ljava/nio/charset/Charset;)[B

  public byte[] getBytes();
    descriptor: ()[B

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z

  public boolean contentEquals(java.lang.StringBuffer);
    descriptor: (Ljava/lang/StringBuffer;)Z

  public boolean contentEquals(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Z

  public boolean equalsIgnoreCase(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public native int compareTo(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int compareToIgnoreCase(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public boolean regionMatches(int, java.lang.String, int, int);
    descriptor: (ILjava/lang/String;II)Z

  public boolean regionMatches(boolean, int, java.lang.String, int, int);
    descriptor: (ZILjava/lang/String;II)Z

  public boolean startsWith(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)Z

  public boolean startsWith(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public boolean endsWith(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public int hashCode();
    descriptor: ()I

  public int indexOf(int);
    descriptor: (I)I

  public int indexOf(int, int);
    descriptor: (II)I

  public int lastIndexOf(int);
    descriptor: (I)I

  public int lastIndexOf(int, int);
    descriptor: (II)I

  public int indexOf(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int indexOf(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)I

  public int lastIndexOf(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int lastIndexOf(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)I

  public java.lang.String substring(int);
    descriptor: (I)Ljava/lang/String;

  public java.lang.String substring(int, int);
    descriptor: (II)Ljava/lang/String;

  public java.lang.CharSequence subSequence(int, int);
    descriptor: (II)Ljava/lang/CharSequence;

  public native java.lang.String concat(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replace(char, char);
    descriptor: (CC)Ljava/lang/String;

  public boolean matches(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public boolean contains(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Z

  public java.lang.String replaceFirst(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replaceAll(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replace(java.lang.CharSequence, java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;

  public java.lang.String[] split(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)[Ljava/lang/String;

  public java.lang.String[] split(java.lang.String);
    descriptor: (Ljava/lang/String;)[Ljava/lang/String;

  public java.lang.String toLowerCase(java.util.Locale);
    descriptor: (Ljava/util/Locale;)Ljava/lang/String;

  public java.lang.String toLowerCase();
    descriptor: ()Ljava/lang/String;

  public java.lang.String toUpperCase(java.util.Locale);
    descriptor: (Ljava/util/Locale;)Ljava/lang/String;

  public java.lang.String toUpperCase();
    descriptor: ()Ljava/lang/String;

  public java.lang.String trim();
    descriptor: ()Ljava/lang/String;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;

  public native char[] toCharArray();
    descriptor: ()[C

  public static java.lang.String format(java.lang.String, java.lang.Object...);
    descriptor: (Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String format(java.util.Locale, java.lang.String, java.lang.Object...);
    descriptor: (Ljava/util/Locale;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String valueOf(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String valueOf(char[]);
    descriptor: ([C)Ljava/lang/String;

  public static java.lang.String valueOf(char[], int, int);
    descriptor: ([CII)Ljava/lang/String;

  public static java.lang.String copyValueOf(char[], int, int);
    descriptor: ([CII)Ljava/lang/String;

  public static java.lang.String copyValueOf(char[]);
    descriptor: ([C)Ljava/lang/String;

  public static java.lang.String valueOf(boolean);
    descriptor: (Z)Ljava/lang/String;

  public static java.lang.String valueOf(char);
    descriptor: (C)Ljava/lang/String;

  public static java.lang.String valueOf(int);
    descriptor: (I)Ljava/lang/String;

  public static java.lang.String valueOf(long);
    descriptor: (J)Ljava/lang/String;

  public static java.lang.String valueOf(float);
    descriptor: (F)Ljava/lang/String;

  public static java.lang.String valueOf(double);
    descriptor: (D)Ljava/lang/String;

  public native java.lang.String intern();
    descriptor: ()Ljava/lang/String;

  public int compareTo(java.lang.Object);
    descriptor: (Ljava/lang/Object;)I

  static {};
    descriptor: ()V
}

从“String.java”编译而来
公共最终类java.lang.String实现java.io.Serializable、java.lang.Comparable、java.lang.CharSequence{
公共静态final java.util.Comparator不区分大小写顺序；
描述符：Ljava/util/Comparator；
public java.lang.String（）；
描述符：（）V
public java.lang.String（java.lang.String）；
描述符：（Ljava/lang/String；）V
public java.lang.String（char[]）；
描述符：（[C）V
public java.lang.String（char[]，int，int）；
描述符：（[CII）V
public java.lang.String（int[]，int，int）；
描述符：（[III）V
public java.lang.String（字节[]，int，int，int）；
描述符：（[BIII）V
public java.lang.String（字节[]，int）；
描述符：（[BI）V
public java.lang.String（字节[]，int，int，java.lang.String）抛出java.io.UnsupportedEncodingException；
描述符：（[BIILjava/lang/String；）V
public java.lang.String（字节[]，int，int，java.nio.charset.charset）；
描述符：（[BIILjava/nio/charset/charset；）V
public java.lang.String（byte[]，java.lang.String）抛出java.io.UnsupportedEncodingException；
描述符：（[BLjava/lang/String；）V
public java.lang.String（字节[]，java.nio.charset.charset）；
描述符：（[BLjava/nio/charset/charset；）V
public java.lang.String（字节[]，int，int）；
描述符：（[BII）V
public java.lang.String（字节[]）；
描述符：（[B）V
public java.lang.String（java.lang.StringBuffer）；
描述符：（Ljava/lang/StringBuffer；）V
public java.lang.String（java.lang.StringBuilder）；
描述符：（Ljava/lang/StringBuilder；）V
公共整数长度（）；
描述符：（）I
公共布尔值为空（）；
描述符：（）Z
公共本地字符（int）；
描述符：（I）C
公共int代码点（int）；
描述者：（I）I
公共int代码点（int）；
描述者：（I）I
公共int代码点计数（int，int）；
描述者：（二）一
公共int offsetByCodePoints（int，int）；
描述者：（二）一
公共void getChars（int，int，char[]，int）；
描述符：（II[CI）V
public void getBytes（int，int，byte[]，int）；
描述符：（II[BI）V
公共字节[]getBytes（java.lang.String）抛出java.io.UnsupportedEncodingException；
描述符：（Ljava/lang/String；）[B
公共字节[]getBytes（java.nio.charset.charset）；
描述符：（Ljava/nio/charset/charset；）[B
公共字节[]getBytes（）；
描述符：（）[B
公共布尔等于（java.lang.Object）；
描述符：（Ljava/lang/Object；）Z
公共布尔contentEquals（java.lang.StringBuffer）；
描述符：（Ljava/lang/StringBuffer；）Z
公共布尔contentEquals（java.lang.CharSequence）；
描述符：（Ljava/lang/CharSequence；）Z
公共布尔equalsIgnoreCase（java.lang.String）；
描述符：（Ljava/lang/String；）Z
公共本机int compareTo（java.lang.String）；
描述符：（Ljava/lang/String；）I
public int compareToIgnoreCase（java.lang.String）；
描述符：（Ljava/lang/String；）I
公共布尔区域匹配（int，java.lang.String，int，int）；
描述符：（ILjava/lang/String；II）Z
公共布尔区域匹配（boolean，int，java.lang.String，int，int）；
描述符：（ZILjava/lang/String；II）Z
公共布尔startsWith（java.lang.String，int）；
描述符：（Ljava/lang/String；I）Z
公共布尔startsWith（java.lang.String）；
描述符：（Ljava/lang/String；）Z
公共布尔值endsWith（java.lang.String）；
描述符：（Ljava/lang/String；）Z
公共int hashCode（）；
描述符：（）I
公共int索引of（int）；
描述者：（I）I
公共int索引of（int，int）；
描述者：（二）一
公共int lastIndexOf（int）；
描述者：（I）I
公共int lastIndexOf（int，int）；
描述者：（二）一
public int indexOf（java.lang.String）；
描述符：（Ljava/lang/String；）I
public int indexOf（java.lang.String，int）；
描述符：（Ljava/lang/String；I）I
public int lastIndexOf（java.lang.String）；
描述符：（Ljava/lang/String；）I
public int lastIndexOf（java.lang.String，int）；
描述符：（Ljava/lang/String；I）I
public java.lang.String子字符串（int）；
描述符：（I）Ljava/lang/String；
public java.lang.String子字符串（int，int）；
描述符：（II）Ljava/lang/String；
public java.lang.CharSequence子序列（int，int）；
描述符：（II）Ljava/lang/CharSequence；
公共本机java.lang.String concat（java.lang.String）；
描述符：（Ljava/lang/String；）Ljava/lang/String；
public java.lang.String替换（char，char）；
描述符：（CC）Ljava/lang/String；
公共布尔匹配（java.lang.String）；
描述符：（Ljava/lang/String；）Z
公共布尔包含（java.lang.CharSequence）；
描述符：（Ljava/lang/CharSequence；）Z
public java.lang.String replaceFirst（java.lang.String，java.lang.String）；
描述符：（Ljava/lang/String；Ljava/lang/String；）Ljava/lang/String；
public java.lang.String replaceAll（java.lang.String，java.lang.String）；
描述符：（Ljava/lang/String；Ljava/lang/String；）Ljava/lang/String；
public java.lang.String替换（java.lang.CharSequence，java.lang.CharSequence）；
描述符：（Ljava/lang/CharSequence；Ljava/lang/CharSequence；）Ljava/lang/String；
public java.lang.String[]拆分（java.lang.String，int）；
描述符：（Ljava/lang/String；I）[Ljava/lang/String；
public java.lang.String[]拆分（java.lang.String）；
描述符：（Ljava/lang/String；
clsString = env->FindClass(CLS_STRING);
if (clsString == NULL) {
    return JNI_ERR;
}

_clsString = (jclass) env->NewWeakGlobalRef(clsString);
if (_clsString == NULL) {
    return JNI_ERR;
}

_midNewString = env->GetMethodID(_clsString, MID_NEW_STRING, SIG_NEW_STRING);
if (_midNewString == NULL) {
    return JNI_ERR;  // ERROR ini here
}

C:\Program Files\Java\jdk1.8.0_65\bin>javap -s java.lang.String

C:\Program Files\Java\jdk1.8.0_65\bin>javap -s -classpath bin/classes C:\Users\{your user account}\AppData\Local\Android\sdk\platforms\android-25\java\lang\String.class

Compiled from "String.java"
public final class java.lang.String implements java.io.Serializable, java.lang.Comparable<java.lang.String>, java.lang.CharSequence {
  public static final java.util.Comparator<java.lang.String> CASE_INSENSITIVE_ORDER;
    descriptor: Ljava/util/Comparator;
  public java.lang.String();
    descriptor: ()V

  public java.lang.String(java.lang.String);
    descriptor: (Ljava/lang/String;)V

  public java.lang.String(char[]);
    descriptor: ([C)V

  public java.lang.String(char[], int, int);
    descriptor: ([CII)V

  public java.lang.String(int[], int, int);
    descriptor: ([III)V

  public java.lang.String(byte[], int, int, int);
    descriptor: ([BIII)V

  public java.lang.String(byte[], int);
    descriptor: ([BI)V

  public java.lang.String(byte[], int, int, java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: ([BIILjava/lang/String;)V

  public java.lang.String(byte[], int, int, java.nio.charset.Charset);
    descriptor: ([BIILjava/nio/charset/Charset;)V

  public java.lang.String(byte[], java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: ([BLjava/lang/String;)V

  public java.lang.String(byte[], java.nio.charset.Charset);
    descriptor: ([BLjava/nio/charset/Charset;)V

  public java.lang.String(byte[], int, int);
    descriptor: ([BII)V

  public java.lang.String(byte[]);
    descriptor: ([B)V

  public java.lang.String(java.lang.StringBuffer);
    descriptor: (Ljava/lang/StringBuffer;)V

  public java.lang.String(java.lang.StringBuilder);
    descriptor: (Ljava/lang/StringBuilder;)V

  public int length();
    descriptor: ()I

  public boolean isEmpty();
    descriptor: ()Z

  public native char charAt(int);
    descriptor: (I)C

  public int codePointAt(int);
    descriptor: (I)I

  public int codePointBefore(int);
    descriptor: (I)I

  public int codePointCount(int, int);
    descriptor: (II)I

  public int offsetByCodePoints(int, int);
    descriptor: (II)I

  public void getChars(int, int, char[], int);
    descriptor: (II[CI)V

  public void getBytes(int, int, byte[], int);
    descriptor: (II[BI)V

  public byte[] getBytes(java.lang.String) throws java.io.UnsupportedEncodingException;
    descriptor: (Ljava/lang/String;)[B

  public byte[] getBytes(java.nio.charset.Charset);
    descriptor: (Ljava/nio/charset/Charset;)[B

  public byte[] getBytes();
    descriptor: ()[B

  public boolean equals(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Z

  public boolean contentEquals(java.lang.StringBuffer);
    descriptor: (Ljava/lang/StringBuffer;)Z

  public boolean contentEquals(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Z

  public boolean equalsIgnoreCase(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public native int compareTo(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int compareToIgnoreCase(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public boolean regionMatches(int, java.lang.String, int, int);
    descriptor: (ILjava/lang/String;II)Z

  public boolean regionMatches(boolean, int, java.lang.String, int, int);
    descriptor: (ZILjava/lang/String;II)Z

  public boolean startsWith(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)Z

  public boolean startsWith(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public boolean endsWith(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public int hashCode();
    descriptor: ()I

  public int indexOf(int);
    descriptor: (I)I

  public int indexOf(int, int);
    descriptor: (II)I

  public int lastIndexOf(int);
    descriptor: (I)I

  public int lastIndexOf(int, int);
    descriptor: (II)I

  public int indexOf(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int indexOf(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)I

  public int lastIndexOf(java.lang.String);
    descriptor: (Ljava/lang/String;)I

  public int lastIndexOf(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)I

  public java.lang.String substring(int);
    descriptor: (I)Ljava/lang/String;

  public java.lang.String substring(int, int);
    descriptor: (II)Ljava/lang/String;

  public java.lang.CharSequence subSequence(int, int);
    descriptor: (II)Ljava/lang/CharSequence;

  public native java.lang.String concat(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replace(char, char);
    descriptor: (CC)Ljava/lang/String;

  public boolean matches(java.lang.String);
    descriptor: (Ljava/lang/String;)Z

  public boolean contains(java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;)Z

  public java.lang.String replaceFirst(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replaceAll(java.lang.String, java.lang.String);
    descriptor: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;

  public java.lang.String replace(java.lang.CharSequence, java.lang.CharSequence);
    descriptor: (Ljava/lang/CharSequence;Ljava/lang/CharSequence;)Ljava/lang/String;

  public java.lang.String[] split(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)[Ljava/lang/String;

  public java.lang.String[] split(java.lang.String);
    descriptor: (Ljava/lang/String;)[Ljava/lang/String;

  public java.lang.String toLowerCase(java.util.Locale);
    descriptor: (Ljava/util/Locale;)Ljava/lang/String;

  public java.lang.String toLowerCase();
    descriptor: ()Ljava/lang/String;

  public java.lang.String toUpperCase(java.util.Locale);
    descriptor: (Ljava/util/Locale;)Ljava/lang/String;

  public java.lang.String toUpperCase();
    descriptor: ()Ljava/lang/String;

  public java.lang.String trim();
    descriptor: ()Ljava/lang/String;

  public java.lang.String toString();
    descriptor: ()Ljava/lang/String;

  public native char[] toCharArray();
    descriptor: ()[C

  public static java.lang.String format(java.lang.String, java.lang.Object...);
    descriptor: (Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String format(java.util.Locale, java.lang.String, java.lang.Object...);
    descriptor: (Ljava/util/Locale;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String valueOf(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/String;

  public static java.lang.String valueOf(char[]);
    descriptor: ([C)Ljava/lang/String;

  public static java.lang.String valueOf(char[], int, int);
    descriptor: ([CII)Ljava/lang/String;

  public static java.lang.String copyValueOf(char[], int, int);
    descriptor: ([CII)Ljava/lang/String;

  public static java.lang.String copyValueOf(char[]);
    descriptor: ([C)Ljava/lang/String;

  public static java.lang.String valueOf(boolean);
    descriptor: (Z)Ljava/lang/String;

  public static java.lang.String valueOf(char);
    descriptor: (C)Ljava/lang/String;

  public static java.lang.String valueOf(int);
    descriptor: (I)Ljava/lang/String;

  public static java.lang.String valueOf(long);
    descriptor: (J)Ljava/lang/String;

  public static java.lang.String valueOf(float);
    descriptor: (F)Ljava/lang/String;

  public static java.lang.String valueOf(double);
    descriptor: (D)Ljava/lang/String;

  public native java.lang.String intern();
    descriptor: ()Ljava/lang/String;

  public int compareTo(java.lang.Object);
    descriptor: (Ljava/lang/Object;)I

  static {};
    descriptor: ()V
}