多年前用过李天平前辈的，自己改过，后来李老师做动软了，不给源码，修改不是很方便。加上我目前需要转java方向，于是决定自己搞。到目前为止花了整整一个星期了，看看目前的成果。
最后是代码工程文件，用c#开发的，IDE是vs2010
为了实现最大的模板*，设计了专有的模板语法。基于C#，但是已经做到尽量简化，对有一点开发经验的同行应该是很好上手的。
目前c#的代码模板已经做了一些通用样例，接下来做java的开发代码模板。
总之，为了提高效率，并且规范项目团队成员的代码书写。
下面把核心的代码两个类文件贴出来，分别是动态编译和模板解析
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.CodeDom.Compiler;
using System.Reflection; namespace CodeMaker.Engine
{
public class Compiler
{
/// <summary>
/// 普通代码编译执行出字符串
/// </summary>
/// <param name="strCode"></param>
/// <returns></returns>
public static string DoCompile(string strCode)
{ StringBuilder strResults = new StringBuilder(); CodeDomProvider provider = CodeDomProvider.CreateProvider("CSharp"); //CompilerParameters 编译参数
CompilerParameters objCompilerParameters = new CompilerParameters();
objCompilerParameters.ReferencedAssemblies.Add("System.dll");
objCompilerParameters.ReferencedAssemblies.Add("System.Core.dll");
objCompilerParameters.ReferencedAssemblies.Add("System.Data.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.BLL.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.DALFactory.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.IDAL.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.Model.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.MySqlDAL.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.SqlDAL.dll");
objCompilerParameters.ReferencedAssemblies.Add("CodeMaker.Engine.dll");
objCompilerParameters.GenerateExecutable = false;
objCompilerParameters.GenerateInMemory = true; // CompilerResults
CompilerResults cr = provider.CompileAssemblyFromSource(objCompilerParameters, strCode); if (cr.Errors.HasErrors)
{
Console.WriteLine("编译错误：");
foreach (CompilerError err in cr.Errors)
{
strResults.Append(err.ErrorText);
strResults.Append(Environment.NewLine);
strResults.Append(err.Line);
strResults.Append(Environment.NewLine);
strResults.Append(err.ToString());
strResults.Append(Environment.NewLine); }
}
else
{
// 通过反射，调用OutPut的输出方法
Assembly objAssembly = cr.CompiledAssembly;
object objHelloWorld = objAssembly.CreateInstance("DynamicCodeGenerate.CodeGenerate");
MethodInfo objMI = objHelloWorld.GetType().GetMethod("OutPut"); strResults.Append(objMI.Invoke(objHelloWorld, null));
strResults.Append(Environment.NewLine); } return strResults.ToString();
} public static string DoCodeMakerCompile(string strDBType,string DALAssemblyPath, string strDataBase,string strTableName, string strEntityName,string strCode)
{ StringBuilder sb = new StringBuilder();
//加上要编译部分代码的头部和尾部
//头部
sb.Append("using System;");
sb.Append("using System.Data;");
sb.Append("using System.Text;");
sb.Append("using System.Linq;");
sb.Append("using System.Globalization;");
sb.Append("using System.Collections.Generic;");
sb.Append("using CodeMaker.Model;");
sb.Append("using CodeMaker.BLL;");
sb.Append("using CodeMaker.Engine;");
sb.Append("namespace DynamicCodeGenerate");
sb.Append("{"); sb.Append(" public class CodeGenerate");
sb.Append(" {");
sb.Append(" public string OutPut()");
sb.Append(" {"); //读取数据实体的属性的代码段
sb.Append(GetEntity(strDBType, DALAssemblyPath, strDataBase, strTableName, strEntityName)); sb.Append(strCode); //返回值，字符串
sb.Append(" return s.ToString(); ");
sb.Append(" }");
//fOutPut方法结束
//首字母大写方法
sb.Append(" public string ToTitleCase(string str)");
sb.Append(" {");
sb.Append(" return str.Substring(0,1).ToUpper()+str.Substring(1);");
sb.Append(" }");
//首字母小写方法
sb.Append(" public string ToLowerCase(string str)");
sb.Append(" {");
sb.Append(" return str.Substring(0,1).ToLower()+str.Substring(1);");
sb.Append(" }"); sb.Append(" }");
sb.Append("}"); return DoCompile(sb.ToString());
} private static string GetEntity(string strDBType, string DALAssemblyPath, string strDataBase, string strTableName, string strEntityName)
{
StringBuilder sb = new StringBuilder();
sb.Append("CodeMaker.BLL.EntityBLL bll = new CodeMaker.BLL.EntityBLL(\"" + DALAssemblyPath + "\");");
sb.Append("IList<CodeMaker.Model.Entity> es = bll.GetEntityList(\"" + strDataBase + "\", \"" + strTableName + "\");");
sb.Append("string EntityName=\"" + strEntityName + "\";");//实体名，供模板中的代码段使用
sb.Append("string TableName=\"" + strTableName + "\";");//表名，供模板中的代码段使用
sb.Append("string DBType=\"" + strDBType + "\";");//数据库组件，判断数据库种类SQLSERVER，MYSQL，供模板中的代码段使用
sb.Append("string TablePri=(es.Where(x=>x.IsPri==\"YES\").Count()>0)?es.Where(x=>x.IsPri==\"YES\").ToList()[0].ColumnName:\"\";");//表的主键列 名称
sb.Append("string TablePriDataType=(es.Where(x=>x.IsPri==\"YES\").Count()>0)?CodeAnalysis.ToDataTypeFormat(es.Where(x=>x.IsPri==\"YES\").ToList()[0].DataType,DBType):\"\";");//表的主键列 数据类型
return sb.ToString(); } public static string GenerateCode()
{
return "";
}
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions; namespace CodeMaker.Engine
{
public class CodeAnalysis
{
public static string Hello()
{
return "Hello";
} public static string ToCSharpCode(string strContent)
{
StringBuilder sb = new StringBuilder();
//需要逐行解析
string[] ss = strContent.Split('\n');
string strT=string.Empty;
if (ss.Length > )
{
sb.Append("StringBuilder s = new StringBuilder();");//如果行数不为0，则需要声明字符串拼接
sb.Append(System.Environment.NewLine);
}
for (int i = ; i < ss.Length; i++)
{
//处理字符串行
sb.Append(DealCode(ss[i]));
sb.Append(System.Environment.NewLine); } return sb.ToString();
} /// <summary>
/// 单行字符串处理
/// </summary>
/// <param name="strLine"></param>
/// <returns></returns>
private static string DealCode(string strLine)
{
//判断当该行是无特殊代码行。特殊代码（<-$、$->） strLine = Regex.Replace(strLine, @"[\r\n]", ""); //替换掉常量中的换行符 if (strLine.Contains("<-$") && strLine.Contains("$->"))
{
//有整行特殊代码段
//strLine = strLine.Replace("\"", "\\\"");
strLine = strLine.Replace("<-$", "");
strLine = strLine.Replace("$->", ""); //strLine += "s.Append(System.Environment.NewLine);";
}
else if (strLine.Contains("<+$") && strLine.Contains("$+>"))
{
//有变量取值代码段
strLine = strLine.Replace("\"", "\\\"");
strLine = "\""+strLine+"\\n\"";//前后先加引号,后面加个换行
strLine = strLine.Replace("<+$", "\"+");
strLine = strLine.Replace("$+>", "+\""); strLine = "s.Append("+ strLine +");";
}
else
{
//不是特殊代码行
//strLine = "s.Append(\"" + strLine + "\"); s.Append(System.Environment.NewLine);" ;
strLine = strLine.Replace("\"", "\\\"");
strLine = "s.Append(\"" + strLine + "\\n\");";
} return strLine;
} #region 供动态编译的代码段中调用的静态方法 /// <summary>
/// 数据库字段数据类型 转为 java语言中的数据类型
/// </summary>
/// <param name="strDBColumnType">数据库字段数据类型</param>
/// <param name="strDBType">数据库MYSQL SQLSERVER</param>
/// <returns></returns>
public static string ToJavaDataType(string strDBColumnType, string strDBType)
{
string strT = string.Empty; //根据strDBType 判断数据库是什么，然后转换为程序语言中的数据类型
switch (strDBType)
{
case "SQLSERVER":
var stringwords = new string[]{"char","varchar","text","nchar","nvarchar","ntext"};
var intwords = new string[]{"int","smallint","tinyint"};
var boolwords = new string[] { "bit"};
var longwords = new string[] { "bigint"};
var decimalwords = new string[] { "numeric", "decimal", "money","smallmoney","float","real" };
var datewords = new string[] { "datetime", "smalldatetime" };
if (stringwords.Contains(strDBColumnType.ToLower()))
{
strT="String";
}
else if (intwords.Contains(strDBColumnType.ToLower()))
{
strT = "int";
}
else if (longwords.Contains(strDBColumnType.ToLower()))
{
strT = "long";
}
else if (boolwords.Contains(strDBColumnType.ToLower()))
{
strT = "boolean";
}
else if (decimalwords.Contains(strDBColumnType.ToLower()))
{
strT = "decimal";
}
else if (datewords.Contains(strDBColumnType.ToLower()))
{
strT = "DateTime";
}
else
{
strT = "String";
} break; case "MYSQL":
var stringwords1 = new string[]{"char","varchar","text","tinytext","mediumtext","longtext"};
var intwords1 = new string[]{"smallint","tinyint","mediumint"};
var boolwords1 = new string[] { "bit"};
var longwords1 = new string[] { "int,bigint", "integer" };
var decimalwords1 = new string[] { "float", "decimal", "double" };
var datewords1 = new string[] { "datetime", "date" };
if (stringwords1.Contains(strDBColumnType.ToLower()))
{
strT = "String";
}
else if (intwords1.Contains(strDBColumnType.ToLower()))
{
strT = "int";
}
else if (longwords1.Contains(strDBColumnType.ToLower()))
{
strT = "long";
}
else if (boolwords1.Contains(strDBColumnType.ToLower()))
{
strT = "boolean";
}
else if (decimalwords1.Contains(strDBColumnType.ToLower()))
{
strT = "decimal";
}
else if (datewords1.Contains(strDBColumnType.ToLower()))
{
strT = "DateTime";
}
else
{
strT = "String";
} break; default:
break;
} return strT;
} /// <summary>
/// 数据库字段数据类型 转为 c# 语言中的数据类型
/// </summary>
/// <param name="strDBColumnType">数据库字段数据类型</param>
/// <param name="strDBType">数据库MYSQL SQLSERVER</param>
/// <returns></returns>
public static string ToCSDataType(string strDBColumnType, string strDBType)
{
string strT = string.Empty; //根据strDBType 判断数据库是什么，然后转换为程序语言中的数据类型
switch (strDBType)
{
case "SQLSERVER":
var stringwords = new string[]{"char","varchar","text","nchar","nvarchar","ntext"};
var intwords = new string[]{"int","smallint","tinyint"};
var boolwords = new string[] { "bit"};
var longwords = new string[] { "bigint"};
var decimalwords = new string[] { "numeric", "decimal", "money","smallmoney","float","real" };
var datewords = new string[] { "datetime", "smalldatetime" };
if (stringwords.Contains(strDBColumnType.ToLower()))
{
strT="string";
}
else if (intwords.Contains(strDBColumnType.ToLower()))
{
strT = "int";
}
else if (longwords.Contains(strDBColumnType.ToLower()))
{
strT = "long";
}
else if (boolwords.Contains(strDBColumnType.ToLower()))
{
strT = "bool";
}
else if (decimalwords.Contains(strDBColumnType.ToLower()))
{
strT = "decimal";
}
else if (datewords.Contains(strDBColumnType.ToLower()))
{
strT = "DateTime";
}
else
{
strT = "string";
} break; case "MYSQL":
var stringwords1 = new string[]{"char","varchar","text","tinytext","mediumtext","longtext"};
var intwords1 = new string[]{"smallint","tinyint","mediumint"};
var boolwords1 = new string[] { "bit"};
var longwords1 = new string[] { "int,bigint", "integer" };
var decimalwords1 = new string[] { "float", "decimal", "double" };
var datewords1 = new string[] { "datetime", "date" };
if (stringwords1.Contains(strDBColumnType.ToLower()))
{
strT="string";
}
else if (intwords1.Contains(strDBColumnType.ToLower()))
{
strT = "int";
}
else if (longwords1.Contains(strDBColumnType.ToLower()))
{
strT = "long";
}
else if (boolwords1.Contains(strDBColumnType.ToLower()))
{
strT = "bool";
}
else if (decimalwords1.Contains(strDBColumnType.ToLower()))
{
strT = "decimal";
}
else if (datewords1.Contains(strDBColumnType.ToLower()))
{
strT = "DateTime";
}
else
{
strT = "string";
} break; default:
break;
} return strT;
} /// <summary>
/// 把小写的sqlserver数据库中的数据类型转为sqlserver参数格式，例如 SqlDbType.VarChar
/// </summary>
/// <param name="strDataType"></param>
/// <param name="strDBType">数据库MYSQL SQLSERVER</param>
/// <returns></returns>
public static string ToDataTypeFormat(string strDataType,string strDBType)
{
string strT = string.Empty;
switch (strDataType.ToLower())
{
case "int":
strT = "Int";
break;
case "varchar":
strT = "VarChar";
break;
case "char":
strT = "Char";
break;
case "bigint":
strT = "BigInt";
break;
case "nvarchar":
strT = "NVarChar";
break;
case "datetime":
strT = "DateTime";
break;
case "smalldatetime":
strT = "SmallDateTime";
break;
case "bit":
strT = "Bit";
break;
case "text":
strT = "Text"; break;
case "decimal":
strT = "Decimal";
break;
case "ntext":
strT = "NText";
break;
default:
strT = "VarChar";
break;
} return strT;
} /// <summary>
/// 获取数据类型或控件的简写，用于前缀命名
/// </summary>
/// <param name="strLongName"></param>
/// <returns></returns>
public static string ToNameFormat(string strLongName)
{
string strT = string.Empty;
switch (strLongName.ToLower())
{
case "int":
strT = "int";
break;
case "string":
strT = "str";
break;
case "char":
strT = "ch";
break;
case "long":
strT = "long";
break;
case "float":
strT = "float";
break;
case "datetime":
strT = "date";
break;
case "double":
strT = "double";
break;
case "bool":
strT = "Is";
break;
case "decimal":
strT = "dec";
break;
case "boolean":
strT = "Is";
break;
default:
strT = "x";
break;
} return strT;
}
#endregion
}
}
--------------------------------------------------------------------------
有位博友提到过T4模板，我也看了一点点，但是我考虑的是不单单生成c#代码，目标代码还要java，因为目前正在转java方向。为了灵活性，我觉得自己定义规则比较放心，也许这个想法不成熟，但是先试试吧
下载链接
http://www.cnblogs.com/allanyang/p/4702467.html