修复：外部传入的 Example 不会被内部修改，完全无副作用

src/main/java/com/iqudoo/framework/mybatis/TapeMybatisGeneratorPlugin.java

@@ -60,6 +60,10 @@ public class TapeMybatisGeneratorPlugin extends PluginAdapter {
         FullyQualifiedJavaType integerType = new FullyQualifiedJavaType("java.lang.Integer");
         FullyQualifiedJavaType booleanType = new FullyQualifiedJavaType("java.lang.Boolean");
         FullyQualifiedJavaType stringType = new FullyQualifiedJavaType("java.lang.String");
+
+        String domainObjectName = introspectedTable.getFullyQualifiedTable().getDomainObjectName();
+        String exampleClassName = domainObjectName + "Example";
+
         // 添加 startPageNum、maxPageSize、ignorePageSize 字段
         Field maxPageSizeField = ElementTools.generateField(
                 "maxPageSize",
@@ -312,6 +316,32 @@ public class TapeMybatisGeneratorPlugin extends PluginAdapter {
         );
         FormatTools.addMethodWithBestPosition(topLevelClass, getWhereString);
 
+
+        Method cloneExample = ElementTools.generateMethod(
+                "cloneExample",
+                JavaVisibility.PUBLIC,
+                topLevelClass.getType()
+        );
+        cloneExample = ElementTools.generateMethodBody(
+                cloneExample,
+                exampleClassName + " newExample = new " + exampleClassName + "();",
+                "newExample.rows = this.rows;",
+                "newExample.offset = this.offset;",
+                "newExample.maxPageSize = this.maxPageSize;",
+                "newExample.ignorePageSize = this.ignorePageSize;",
+                "newExample.startPageNum = startPageNum;",
+                hasBLOBColumns ? "newExample.withBLOBs = withBLOBs;" : "",
+                "if (this.getOredCriteria() != null && !this.getOredCriteria().isEmpty()) {",
+                "for (" + exampleClassName + ".Criteria oldCriteria : this.getOredCriteria()) {",
+                exampleClassName + ".Criteria newCriteria = newExample.or();",
+                "newCriteria.getCriteria().addAll(oldCriteria.getCriteria());",
+                "}",
+                "}",
+                "newExample.setOrderByClause(this.getOrderByClause());",
+                "return newExample;"
+        );
+        FormatTools.addMethodWithBestPosition(topLevelClass, cloneExample);
+
         // !!! clear 方法增加 offset 和 rows的清理
         boolean hasClear = false;
         List<Method> methodList = topLevelClass.getMethods();

src/main/java/com/iqudoo/framework/mybatis/TapeRepositoryGeneratorPlugin.java

@@ -413,6 +413,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addParameter(new Parameter(new FullyQualifiedJavaType(exampleClassName), "example"));
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("example.usePage(1, 1);");
         method.addBodyLine("List<" + modelClassName + "> dataList = list(example);");
         method.addBodyLine("if (dataList != null && !dataList.isEmpty()) {");
@@ -554,6 +556,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
         // 方法体
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("for (" + exampleClassName + ".Criteria criteria : example.getOredCriteria()) {");
         method.addBodyLine("criteria.andIsDeleteEqualTo(0);");
         method.addBodyLine("}");
@@ -655,6 +659,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addBodyLine("if (release) {");
         method.addBodyLine("return " + mapperFieldName + ".deleteByExample(example);");
         method.addBodyLine("}");
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("for (" + exampleClassName + ".Criteria criteria : example.getOredCriteria()) {");
         method.addBodyLine("criteria.andIsDeleteEqualTo(0);");
         method.addBodyLine("}");
@@ -689,6 +695,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addParameter(new Parameter(new FullyQualifiedJavaType(exampleClassName), "example"));
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("for (" + exampleClassName + ".Criteria criteria : example.getOredCriteria()) {");
         method.addBodyLine("criteria.andIsDeleteEqualTo(0);");
         method.addBodyLine("}");
@@ -772,6 +780,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addBodyLine("example.limit(rowBounds.getOffset(), rowBounds.getLimit());");
         method.addBodyLine("}");
 
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("for (" + exampleClassName + ".Criteria criteria : example.getOredCriteria()) {");
         method.addBodyLine("criteria.andIsDeleteEqualTo(0);");
         method.addBodyLine("}");
@@ -848,6 +858,8 @@ public class TapeRepositoryGeneratorPlugin extends PluginAdapter {
         method.addParameter(new Parameter(new FullyQualifiedJavaType(exampleClassName), "example"));
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("for (" + exampleClassName + ".Criteria criteria : example.getOredCriteria()) {");
         method.addBodyLine("criteria.andIsDeleteEqualTo(0);");
         method.addBodyLine("}");

src/main/java/com/iqudoo/framework/mybatis/TapeRepoviewGeneratorPlugin.java

@@ -255,6 +255,8 @@ public class TapeRepoviewGeneratorPlugin extends PluginAdapter {
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
         // 方法体
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("example.usePage(1, 1);");
         method.addBodyLine("List<" + modelClassName + "> dataList = getList(example);");
         method.addBodyLine("if (dataList != null && !dataList.isEmpty()) {");
@@ -276,6 +278,9 @@ public class TapeRepoviewGeneratorPlugin extends PluginAdapter {
         // 参数名匹配示例（首字母小写）
         method.addParameter(new Parameter(new FullyQualifiedJavaType(exampleClassName), "example"));
         method.addException(new FullyQualifiedJavaType("Throwable"));
+
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("List<" + modelClassName + "> result = null;");
         method.addBodyLine("long startTime = new Date().getTime();");
         if (hasBLOBColumns) {
@@ -319,6 +324,8 @@ public class TapeRepoviewGeneratorPlugin extends PluginAdapter {
         method.addException(new FullyQualifiedJavaType("Throwable"));
 
         // 方法体
+        method.addBodyLine("// clone new example");
+        method.addBodyLine("example = example.cloneExample();");
         method.addBodyLine("long startTime = new Date().getTime();");
         method.addBodyLine("long count = " + mapperFieldName + ".countByExample(example);");
         method.addBodyLine("long useTime = new Date().getTime() - startTime;");