diff --git a/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java b/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java
new file mode 100644
index 00000000..dd97cab7
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+++ b/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java
@@ -0,0 +1,128 @@
+/*
+ *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+package com.mybatisflex.processor.builder;
+
+import com.mybatisflex.annotation.Table;
+import com.mybatisflex.processor.util.StrUtil;
+
+import java.util.List;
+import java.util.Map;
+import java.util.StringJoiner;
+
+/**
+ * 文件内容构建。
+ *
+ * @author 王帅
+ * @since 2023-06-23
+ */
+@SuppressWarnings("all")
+public class ContentBuilder {
+
+    private ContentBuilder() {
+    }
+
+    /**
+     * 构建 Mapper 文件内容。
+     */
+    public static String buildMapper(String entityClass, String entityClassName,
+                                     String mappersPackage, String mapperClassName, String baseMapperClass) {
+        StringBuilder content = new StringBuilder("package ");
+        content.append(mappersPackage).append(";\n\n");
+        content.append("import ").append(baseMapperClass).append(";\n");
+        content.append("import ").append(entityClass).append(";\n\n");
+        String realEntityClassName = StrUtil.getClassName(entityClass);
+        String baseMapperClassName = StrUtil.getClassName(baseMapperClass);
+        content.append("public interface ").append(mapperClassName).append(" extends ").append(baseMapperClassName).append("<").append(realEntityClassName).append("> {\n}");
+        return content.toString();
+    }
+
+    /**
+     * 构建 TableDef 文件内容。
+     */
+    public static String buildTableDef(Table table, String entityClass, String entityClassName, boolean allInTables,
+                                       String tableDefPackage, String tableDefClassName,
+                                       String tablesNameStyle, String tablesDefSuffix,
+                                       Map<String, String> propertyAndColumns, List<String> defaultColumns) {
+        StringBuilder content = new StringBuilder("package ");
+        content.append(tableDefPackage).append(";\n\n");
+        content.append("import com.mybatisflex.core.query.QueryColumn;\n");
+        content.append("import com.mybatisflex.core.table.TableDef;\n\n");
+        content.append("// Auto generate by mybatis-flex, do not modify it.\n");
+        content.append("public class ").append(tableDefClassName).append(" extends TableDef {\n\n");
+        if (!allInTables) {
+            String schema = !StrUtil.isBlank(table.schema())
+                    ? table.schema()
+                    : "";
+            String tableName = !StrUtil.isBlank(table.value())
+                    ? table.value()
+                    : StrUtil.firstCharToLowerCase(entityClassName);
+            content.append("    public static final ").append(tableDefClassName).append(' ').append(StrUtil.buildFieldName(entityClassName.concat(tablesDefSuffix != null ? tablesDefSuffix.trim() : ""), tablesNameStyle))
+                    .append(" = new ").append(tableDefClassName).append("(\"").append(schema).append("\", \"").append(tableName).append("\");\n\n");
+        }
+        propertyAndColumns.forEach((property, column) -> content.append("    public QueryColumn ")
+                .append(StrUtil.buildFieldName(property, tablesNameStyle))
+                .append(" = new QueryColumn(this, \"")
+                .append(column).append("\");\n"));
+        content.append("    public QueryColumn ").append(StrUtil.buildFieldName("allColumns", tablesNameStyle)).append(" = new QueryColumn(this, \"*\");\n");
+        StringJoiner defaultColumnJoiner = new StringJoiner(", ");
+        propertyAndColumns.forEach((property, column) -> {
+            if (defaultColumns.contains(column)) {
+                defaultColumnJoiner.add(StrUtil.buildFieldName(property, tablesNameStyle));
+            }
+        });
+        content.append("    public QueryColumn[] ").append(StrUtil.buildFieldName("defaultColumns", tablesNameStyle)).append(" = new QueryColumn[]{").append(defaultColumnJoiner).append("};\n\n");
+        content.append("    public ").append(tableDefClassName).append("(String schema, String tableName) {\n")
+                .append("       super(schema, tableName);\n")
+                .append("    }\n\n}\n");
+        return content.toString();
+    }
+
+    /**
+     * 构建 Tables 文件内容。
+     */
+    public static String buildTables(StringBuilder importBuilder, StringBuilder fieldBuilder,
+                                     String tablesPackage, String tablesClassName) {
+        return "package " + tablesPackage + ";\n\n" +
+                importBuilder.toString() +
+                "\n// Auto generate by mybatis-flex, do not modify it.\n" +
+                "public class " + tablesClassName + " {\n\n" +
+                "   private " + tablesClassName + "() {\n" +
+                "   }\n\n" +
+                fieldBuilder.toString() +
+                "\n}\n";
+    }
+
+    /**
+     * 构建 Tables 文件常量属性。
+     */
+    public static void buildTablesField(StringBuilder importBuilder, StringBuilder fieldBuilder, Table table,
+                                        String entityClass, String entityClassName, String tablesNameStyle, String tablesDefSuffix) {
+        String tableDefPackage = StrUtil.buildTableDefPackage(entityClass);
+        String tableDefClassName = entityClassName.concat("TableDef");
+        importBuilder.append("import ").append(tableDefPackage).append('.').append(tableDefClassName).append(";\n");
+        String schema = !StrUtil.isBlank(table.schema())
+                ? table.schema()
+                : "";
+        String tableName = !StrUtil.isBlank(table.value())
+                ? table.value()
+                : StrUtil.firstCharToLowerCase(entityClassName);
+        fieldBuilder.append("   public static final ").append(tableDefClassName).append(' ')
+                .append(StrUtil.buildFieldName(entityClassName.concat(tablesDefSuffix != null ? tablesDefSuffix.trim() : ""), tablesNameStyle))
+                .append(" = new ").append(tableDefClassName).append("(\"").append(schema).append("\", \"").append(tableName).append("\");\n");
+    }
+
+}
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