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;

   }

 }

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