在进行编码写实体类的时候发现，一个实体类有好多的字段要进行注释，他们都是私有的不能直接访问，我们在写的时候加入的文档注释也起不到效果，但是自动生成的get，set方法的文档注释有不符合我们要求（没有包含字段中的文档注释） 所以就很纠结。在网上看到了一些大神有解决方法就试了下可以，拿出来和大家分享下！
修改后的效果图：
步骤：
1：在myeclipse/eclisp中搜索找到org.eclipse.jdt.ui_*.jar（*是版本号）
2：将jar文件改成.rar格式并打开（修改前最好先备份一下这个jar文件）
3：找到\org\eclipse\jdt\internal\corext\codemanipulation这个目录下的GetterSetterUtil.class这个文件， 并下载我提供压缩文件下的文件替换掉这一个文件就可以了
4：开启开发工具找到Window->Preferences->Java->CodeStyle->Code Templates->Comments->Getters/Setters
getters：
/**
* 获取${bare_field_name}
* @return ${bare_field_name} ${bare_field_name}
*/
setters:
/**
* 设置${bare_field_name}
* @param ${bare_field_name} ${bare_field_name}
*/
注意：生成Get/Set方法时勾选上Generate method comments
上面的链接如果没有积分的话，可以新建一个.txt，把下面这些代码丢进去，直接改文件名为.class（代码为编译后的代码）
package org.eclipse.jdt.internal.corext.codemanipulation; import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.Flags;
import org.eclipse.jdt.core.IField;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IMethod;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.core.NamingConventions;
import org.eclipse.jdt.core.Signature;
import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.Assignment;
import org.eclipse.jdt.core.dom.Assignment.Operator;
import org.eclipse.jdt.core.dom.CastExpression;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jdt.core.dom.ITypeBinding;
import org.eclipse.jdt.core.dom.IVariableBinding;
import org.eclipse.jdt.core.dom.InfixExpression;
import org.eclipse.jdt.core.dom.InfixExpression.Operator;
import org.eclipse.jdt.core.dom.NumberLiteral;
import org.eclipse.jdt.core.dom.ParenthesizedExpression;
import org.eclipse.jdt.core.dom.PostfixExpression;
import org.eclipse.jdt.core.dom.PostfixExpression.Operator;
import org.eclipse.jdt.core.dom.PrefixExpression;
import org.eclipse.jdt.core.dom.PrefixExpression.Operator;
import org.eclipse.jdt.core.dom.PrimitiveType;
import org.eclipse.jdt.core.dom.rewrite.ASTRewrite;
import org.eclipse.jdt.internal.corext.dom.ASTNodes;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jdt.internal.corext.util.JdtFlags;
import org.eclipse.jdt.ui.CodeGeneration; public class GetterSetterUtil
{
private static final String[] EMPTY = new String[0]; public static String getGetterName(IField field, String[] excludedNames)
throws JavaModelException
{
boolean useIs = StubUtility.useIsForBooleanGetters(field
.getJavaProject());
return getGetterName(field, excludedNames, useIs);
} private static String getGetterName(IField field, String[] excludedNames, boolean useIsForBoolGetters) throws JavaModelException
{
if (excludedNames == null)
excludedNames = EMPTY;
return getGetterName(field.getJavaProject(), field.getElementName(),
field.getFlags(), (useIsForBoolGetters) &&
(JavaModelUtil.isBoolean(field)), excludedNames);
} public static String getGetterName(IVariableBinding variableType, IJavaProject project, String[] excludedNames, boolean isBoolean)
{
boolean useIs = (StubUtility.useIsForBooleanGetters(project)) &&
(isBoolean);
return getGetterName(project, variableType.getName(),
variableType.getModifiers(), useIs, excludedNames);
} public static String getGetterName(IJavaProject project, String fieldName, int flags, boolean isBoolean, String[] excludedNames)
{
return NamingConventions.suggestGetterName(project, fieldName, flags,
isBoolean, excludedNames);
} public static String getSetterName(IVariableBinding variableType, IJavaProject project, String[] excludedNames, boolean isBoolean)
{
return getSetterName(project, variableType.getName(),
variableType.getModifiers(), isBoolean, excludedNames);
} public static String getSetterName(IJavaProject project, String fieldName, int flags, boolean isBoolean, String[] excludedNames)
{
return NamingConventions.suggestSetterName(project, fieldName, flags,
isBoolean, excludedNames);
} public static String getSetterName(IField field, String[] excludedNames) throws JavaModelException
{
if (excludedNames == null)
excludedNames = EMPTY;
return NamingConventions.suggestSetterName(field.getJavaProject(),
field.getElementName(), field.getFlags(),
JavaModelUtil.isBoolean(field), excludedNames);
} public static IMethod getGetter(IField field) throws JavaModelException {
String getterName = getGetterName(field, EMPTY, true);
IMethod primaryCandidate = JavaModelUtil.findMethod(getterName,
new String[0], false, field.getDeclaringType());
if ((!JavaModelUtil.isBoolean(field)) || ((primaryCandidate != null) &&
(primaryCandidate.exists()))) {
return primaryCandidate;
}
String secondCandidateName = getGetterName(field, EMPTY, false);
return JavaModelUtil.findMethod(secondCandidateName, new String[0],
false, field.getDeclaringType());
} public static IMethod getSetter(IField field) throws JavaModelException
{
String[] args = { field.getTypeSignature() };
return JavaModelUtil.findMethod(getSetterName(field, EMPTY), args,
false, field.getDeclaringType());
} public static String getSetterStub(IField field, String setterName, boolean addComments, int flags)
throws CoreException
{
String fieldName = field.getElementName();
IType parentType = field.getDeclaringType();
String returnSig = field.getTypeSignature();
String typeName = Signature.toString(returnSig);
IJavaProject project = field.getJavaProject();
String accessorName = NamingConventions.removePrefixAndSuffixForFieldName(project, fieldName, field.getFlags());
String argname = StubUtility.suggestArgumentName(project, accessorName, EMPTY);
boolean isStatic = Flags.isStatic(flags);
boolean isSync = Flags.isSynchronized(flags);
boolean isFinal = Flags.isFinal(flags);
String lineDelim = "\n";
StringBuffer buf = new StringBuffer();
if (addComments) {
String comment = CodeGeneration.getSetterComment(
field.getCompilationUnit(),
parentType.getTypeQualifiedName('.'),
setterName,
field.getElementName(),
typeName,
argname,
accessorName,
lineDelim);
ISourceRange sr = field.getJavadocRange();
if (sr != null) {
String filedComment = field.getSource();
filedComment = filedComment.substring(0, sr.getLength());
filedComment = filedComment.replaceAll("[\n,\r,*,/, ,\t]", ""); comment = comment.replaceFirst(field.getElementName(), filedComment); int i = comment.lastIndexOf(field.getElementName());
int j = getCount(comment, field.getElementName());
if ((i != -1) && (j >= 2)) {
comment = comment.substring(0, i) + filedComment + comment.substring(i + field.getElementName().length());
}
} if (comment != null) {
buf.append(comment);
buf.append(lineDelim);
}
}
buf.append(JdtFlags.getVisibilityString(flags));
buf.append(' ');
if (isStatic)
buf.append("static ");
if (isSync)
buf.append("synchronized ");
if (isFinal)
buf.append("final ");
buf.append("void ");
buf.append(setterName);
buf.append('(');
buf.append(typeName);
buf.append(' ');
buf.append(argname);
buf.append(") {");
buf.append(lineDelim);
boolean useThis = StubUtility.useThisForFieldAccess(project);
if ((argname.equals(fieldName)) || ((useThis) && (!isStatic)))
if (isStatic)
fieldName = parentType.getElementName() + '.' + fieldName;
else
fieldName = "this." + fieldName;
String body = CodeGeneration.getSetterMethodBodyContent(field
.getCompilationUnit(), parentType.getTypeQualifiedName('.'),
setterName, fieldName, argname, lineDelim);
if (body != null)
buf.append(body);
buf.append("}");
buf.append(lineDelim);
return buf.toString();
} public static String getGetterStub(IField field, String getterName, boolean addComments, int flags)
throws CoreException
{
String fieldName = field.getElementName();
IType parentType = field.getDeclaringType();
boolean isStatic = Flags.isStatic(flags);
boolean isSync = Flags.isSynchronized(flags);
boolean isFinal = Flags.isFinal(flags);
String typeName = Signature.toString(field.getTypeSignature());
String accessorName = NamingConventions.removePrefixAndSuffixForFieldName(field.getJavaProject(), fieldName, field.getFlags());
String lineDelim = "\n";
StringBuffer buf = new StringBuffer();
if (addComments)
{
String comment = CodeGeneration.getGetterComment(
field.getCompilationUnit(),
parentType.getTypeQualifiedName('.'),
getterName,
field.getElementName(),
typeName,
accessorName,
lineDelim);
ISourceRange sr = field.getJavadocRange();
if (sr != null) {
String filedComment = field.getSource();
filedComment = filedComment.substring(0, sr.getLength());
filedComment = filedComment.replaceAll("[\n,\r,*,/, ,\t]", ""); comment = comment.replaceFirst(field.getElementName(), filedComment); int i = comment.lastIndexOf(field.getElementName());
int j = getCount(comment, field.getElementName());
if ((i != -1) && (j >= 2)) {
comment = comment.substring(0, i) + filedComment + comment.substring(i + field.getElementName().length());
}
} if (comment != null) {
buf.append(comment);
buf.append(lineDelim);
}
}
buf.append(JdtFlags.getVisibilityString(flags));
buf.append(' ');
if (isStatic)
buf.append("static ");
if (isSync)
buf.append("synchronized ");
if (isFinal)
buf.append("final ");
buf.append(typeName);
buf.append(' ');
buf.append(getterName);
buf.append("() {");
buf.append(lineDelim);
boolean useThis = StubUtility.useThisForFieldAccess(field.getJavaProject());
if ((useThis) && (!isStatic))
fieldName = "this." + fieldName;
String body = CodeGeneration.getGetterMethodBodyContent(field.getCompilationUnit(), parentType.getTypeQualifiedName('.'), getterName, fieldName, lineDelim);
if (body != null)
buf.append(body);
buf.append("}");
buf.append(lineDelim);
return buf.toString();
} private static int getCount(String str, String sign)
{
if (str == null)
return 0;
double i = str.length();
str = str.replaceAll(sign, "");
return (int)(i - str.length()) / sign.length();
} public static Expression getAssignedValue(ASTNode node, ASTRewrite astRewrite, Expression getterExpression, ITypeBinding variableType, boolean is50OrHigher)
{
InfixExpression.Operator op = null;
AST ast = astRewrite.getAST();
if (isNotInBlock(node))
return null;
if (node.getNodeType() == 7) {
Assignment assignment = (Assignment)node;
Expression rightHandSide = assignment.getRightHandSide();
Expression copiedRightOp = (Expression)astRewrite
.createCopyTarget(rightHandSide);
if (assignment.getOperator() == Assignment.Operator.ASSIGN) {
ITypeBinding rightHandSideType = rightHandSide
.resolveTypeBinding();
copiedRightOp = createNarrowCastIfNessecary(copiedRightOp,
rightHandSideType, ast, variableType, is50OrHigher);
return copiedRightOp;
}
if (getterExpression != null) {
InfixExpression infix = ast.newInfixExpression();
infix.setLeftOperand(getterExpression);
infix.setOperator(ASTNodes.convertToInfixOperator(
assignment.getOperator()));
infix.setRightOperand(copiedRightOp);
ITypeBinding infixType = infix.resolveTypeBinding();
return createNarrowCastIfNessecary(infix, infixType, ast,
variableType, is50OrHigher);
}
} else if (node.getNodeType() == 37) {
PostfixExpression po = (PostfixExpression)node;
if (po.getOperator() == PostfixExpression.Operator.INCREMENT)
op = InfixExpression.Operator.PLUS;
if (po.getOperator() == PostfixExpression.Operator.DECREMENT)
op = InfixExpression.Operator.MINUS;
} else if (node.getNodeType() == 38) {
PrefixExpression pe = (PrefixExpression)node;
if (pe.getOperator() == PrefixExpression.Operator.INCREMENT)
op = InfixExpression.Operator.PLUS;
if (pe.getOperator() == PrefixExpression.Operator.DECREMENT)
op = InfixExpression.Operator.MINUS;
}
if ((op != null) && (getterExpression != null)) {
return createInfixInvocationFromPostPrefixExpression(op,
getterExpression, ast, variableType, is50OrHigher);
}
return null;
} private static boolean isNotInBlock(ASTNode parent) {
ASTNode statement = parent.getParent();
boolean isStatement = statement.getNodeType() != 21;
ASTNode block = statement.getParent();
boolean isBlock = (block.getNodeType() == 8) || (block.getNodeType() == 50);
boolean isControlStatemenBody =
ASTNodes.isControlStatementBody(statement.getLocationInParent());
return (isStatement) || ((!isBlock) && (!isControlStatemenBody));
} private static Expression createInfixInvocationFromPostPrefixExpression(InfixExpression.Operator operator, Expression getterExpression, AST ast, ITypeBinding variableType, boolean is50OrHigher)
{
InfixExpression infix = ast.newInfixExpression();
infix.setLeftOperand(getterExpression);
infix.setOperator(operator);
NumberLiteral number = ast.newNumberLiteral();
number.setToken("1");
infix.setRightOperand(number);
ITypeBinding infixType = infix.resolveTypeBinding();
return createNarrowCastIfNessecary(infix, infixType, ast, variableType,
is50OrHigher);
} private static Expression createNarrowCastIfNessecary(Expression expression, ITypeBinding expressionType, AST ast, ITypeBinding variableType, boolean is50OrHigher)
{
PrimitiveType castTo = null;
if (variableType.isEqualTo(expressionType))
return expression;
if (is50OrHigher) {
if (ast.resolveWellKnownType("java.lang.Character").isEqualTo(
variableType))
castTo = ast.newPrimitiveType(PrimitiveType.CHAR);
if (ast.resolveWellKnownType("java.lang.Byte").isEqualTo(
variableType))
castTo = ast.newPrimitiveType(PrimitiveType.BYTE);
if (ast.resolveWellKnownType("java.lang.Short").isEqualTo(
variableType))
castTo = ast.newPrimitiveType(PrimitiveType.SHORT);
}
if (ast.resolveWellKnownType("char").isEqualTo(variableType))
castTo = ast.newPrimitiveType(PrimitiveType.CHAR);
if (ast.resolveWellKnownType("byte").isEqualTo(variableType))
castTo = ast.newPrimitiveType(PrimitiveType.BYTE);
if (ast.resolveWellKnownType("short").isEqualTo(variableType))
castTo = ast.newPrimitiveType(PrimitiveType.SHORT);
if (castTo != null) {
CastExpression cast = ast.newCastExpression();
if (ASTNodes.needsParentheses(expression)) {
ParenthesizedExpression parenthesized = ast
.newParenthesizedExpression();
parenthesized.setExpression(expression);
cast.setExpression(parenthesized);
} else {
cast.setExpression(expression);
}
cast.setType(castTo);
return cast;
}
return expression;
}
}