src/main/java/com/itfsw/mybatis/generator/plugins/utils/JavaElementGeneratorTools.java
public static Method generateSetterMethod(Field field) {
        Method method = generateMethod(
                "set" + FormatTools.upFirstChar(field.getName()),
                JavaVisibility.PUBLIC,
                null,
                new Parameter(field.getType(), field.getName())
        );
        return generateMethodBody(method, "this." + field.getName() + " = " + field.getName() + ";");
    }
public static Method generateSetterMethod(Field field) {
        Method method = generateMethod(
                "set" + FormatTools.upFirstChar(field.getName()),
                JavaVisibility.PUBLIC,
                null,
                new Parameter(field.getType(), field.getName())
        );
        return generateMethodBody(method, "this." + field.getName() + " = " + field.getName() + ";");
    }
生成Filed的Set方法
@param field field
@return