MVC模式的两种实例
MVC模式的两种实例<div id="cnblogs_post_body">MVC模式
MVC模式提供了数据模型与数据显示的分离，使得两者可以独立演化。
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传统MVC
这里传统MVC指以服务器脚本为主的建站方案。例如用PHP生成不同的HTML页面，各个页面之间用锚<a>来链接。
http://www.agoit.com/bbs/data:image/png;base64,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
对浏览器发来的请求，服务器首先进行授权认证，然后把这个请求发送（dispatch）到对应的数据处理模块，由该模块（很可能）存取数据，根据模板生成HTML页面会送给浏览器。这个方案由服务器完成MVC所有的部件，浏览器负责显示。MVC对应如下：
[*]C控制器：请求发送模块
[*]M模型：数据处理模块
[*]V视图：显示模板
基于AJAX的MVC
使用Ajax 减轻了浏览器与服务器之间的数据交换，因为一些视图直接在浏览器中生成，服务器只负责响应对数据模型的请求。
[*]C控制器：浏览器的视图转换模块
[*]M模型：服务器的数据处理模块
[*]V视图：浏览器的文档模型（DOM）
http://www.agoit.com/bbs/data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAkAAAAFGCAIAAAANSbfhAAAZmUlEQVR4nO3dP2/bVhvGYX4HfwMNHbN58dLBHTW9kxd7NKChY2F0MVA09hh4M4SuyaYgW9oOQgANGQJUGYIMQghkEKAAQQDBzGJNfIfjMMckpZAWJZ374e8ailR/qIfnPId3SNFxlAIAICjadQEAADwEAQYAkESAAQAkEWAAAEkEGABAEgEGAJBEgAEAJBFgAABJBBgAQBIBBgCQRIABACQRYAAASQQYAEASAQYAkESAAQAkEWAAAEkEGABAEgEGAJBEgAEAJK0VYJEhTQ0oGrfr1tCz6xnDZu26v5q07lCsOY5rfnwgzOyIScxOLQyXeWammABrhpkdMYnZqYXhMs/MFBNgzTCzIyYxO7UwXOaZmWICrBlmdsQkZqcWhss8M1NMgDXDzI6YxOzUwnCZZ2aK9QPs5WkUHVx9WHczazLTECYtnZ0wmif9cHUQBVGIQzObV3uKA1kpBfIB9vI0iqLTl9/+5P5Y+L+NY82HbNns5Jsnc2+p+s99aygXOf4L7151751Vg4kAw3bVneLvKyUw6gH24erg28ASYFhiyewsaZ67cCo+4f35LnIODu5S58PVwcHBg1OIAMN21Zxib6UERjzA/IFdHmD+X6HvjhK5h7IjyMvTh00Uaz5k5bOzvHmydsgly/f//fanq9Po9GWafrg6OL0qSaFss+4PLuOKWfXtfO5ejxZ60n/VwdXLq4N7p48HVx/uXnJw9aFKz5d9xKrhgiH1pvh+ftVvrbu+v7fW7p6q1JCN7UjpFtZ683off29glwRYyd9uvy/zb4v/9PQgyo/zNncEG1U6OyuaJ/vf/Hl8satenrqXnb4sO43KB9j3aLnXZN5bCxn5rSe9t3lp+P2FWVXF3M0+4l7PFz9i5XDBklpT7K+UB7ZWoXvd3/cqNmRTO1K+hbXevNbH+yP3gwArxvw9a0RXEzuCzSqbnVXNUyPAvm+nQoCVfFf7vZa7t+Ybt+wU0furqwvO09PT7K+0VXu+8BErhwum1Jnieyvloa2Va+u76xUVG7KhHVmyhbXevNbH378zZsV3YPe/hl/2l4h1voRgzYesbHZWNU/1S4g/6KH1A+zb9kr6+fT09O4qpssudx3h/gJY0fNLSl4yXDClzhQXbkB8UGv5wVV+kaDsXY3uyJItrPXmdT4+P7BLvm/PfPj2rcHdBHjPEmCmlcxOrnmKN3Hcu7q/7CaO5gPs+7O57ZVtwbvzsXhbpLfl0p5fUnL5cMGWGlO87Ab6uq31/UzN/5K2UkM2syPLtrDWm9f4+LKBLfl+8d4Zbu7v0tnDd9+BEWA2FWen/C8/xT7JP1c4R/v+srUDLPchS/4O6xfoX3HxvmWr1vNLrnqWDheMqT7FuZWyTmvlM6tyQzayI0u3sNabH/7xYf1kAms+ZIXZCat5QkMzm1d5ikNfKbIBFthPJrDmQ5afncCaJzQ0s3lVpzj4lSIbYIExsyMmMTu1MFzmmZliAqwZZnbEJGanFobLPDNTTIA1w8yOmMTs1MJwmWdmigmwZpjZEZOYnVoYLvPMTDEB1gwzO2ISs1MLw2WemSkmwJphZkdMYnZqYbjMMzPFBFgzzOyIScxOLQyXeWammABrhpkdMYnZqYXhMs/MFBNgzTCzIyYxO7UwXOaZmWICrBlmdsQkZqcWhss8M1NMgDXDzI6YxOzUwnCZZ2aKCbBmmNkRk5idWhgu88xMMQHWDDM7YhKzUwvDZZ6ZKSbAmmFmR0xidmphuMwzM8UEWDPM7IhJzE4tDJd5ZqaYAGuGmR0xidmpheEyz8wUE2DNMLMjJjE7tTBc5pmZYgKsGWZ2xCRmpxaGyzwzU0yANcPMjpjE7NTCcJlnZooJsGaY2RGTmJ1aGC7zzEwxAdYMMztiErNTC8Nlnpkp3n2AmbHmOGJzdt0aenY9Y9isXfdXk9YdikYGFACALRMIsPVTGtgQmhNWSfS2QokK44h2ojlhlURvK5SoMI5oJ5oTVkn0tkCJAAAUEWAAAEkEGABAkkCASVyKRTvRnLBKorcVSlQYR7QTzQmrJHpboUSFcUQ70ZywSqK3BUoEAKCIAAMASCLAAACSBAJM4lIs2onmhFUSva1QosI4op1oTlgl0dsKJSqMI9qJ5oRVEr0tUCIAAEUEGABAEgEGAJAkEGASl2LRTjQnrJLobYUSFcYR7URzwiqJ3lYoUWEc0U40J6yS6G2BEgEAKCLAAACSCDAAgCSBAJO4FIt2ojlhlURvK5SoMI4hmE3jXu/ydrGo+NRicXt2dBhF0d7eo3g621aZptCcsEqitxVKVBjHELiUiuN3xawqDbDhoH9yfp2m6WQ8Ojw6K00+rEZzwiqJ3hYoERXVOgNLkvnxftedeLlTsdF4sr1aAWBtBJi2JJl3O50oiqIo+uvZM/8MrPjU7WIxGY/cBcPcWddw0O8PhrvdFwCohQATljtz8i8h3ny9KX2qu388T5K0kFiT8chdTgQAFQIBJnEpdidyFwb9AMt9Ezabxo/29jqdrkuvtBBgKy4/YgWaE1ZJ9LZCiQrjuBO1AqzXu3z+9El2msUZWCNoTlgl0dsKJSqM407UvYR4u1hcn5+43OI7sEbQnLBKorcFSsQK7tpg6U0cxaeyOzv6gyF3IQJQR4C1Fz8HBkAaAdZe/EscORLXTABkBFYshxVsR+Sp/paNlgTsikRvK5SoMI4wICqo8pYtFAZsn0RvK5SoMI4woBhgP0wymhNWSfS2QInpyiMLEI5dLxSgXVhywJ3VyVQln8gwYJtYb8Cd1SdVBBgQGoH1xkEB27H6YiABhlaRaGaFEhXGEQas/h6LAEOrSDSzQokK4wjzCDC0ikQzC5QIhIAAA0LDegMqIcCA0LDegEoIMCA0AuuNgwJCQIChVSSaWaFEhXGEeQQYWkWimRVKVBhHmEeAoVUkmlmgRCAEBBgQGtYbUAkBBoSG9QZUQoABoRFYbxwUEAICDK0i0cwKJSqMI8yrGGCbs4V9BDISLadQosI4wrzdnoGxCrBlEi0nUCIQAgIMCA2rAqiEAANCw6oAKiHAgNAIrAqWLkJAgKFVJFpOoUSFcYR57Qmw2TTu9S5vF4utfWJ1i8Xt2dFhFEV7e4/i6WzX5VgmceBVKFFhHGGemQDL8mlZUBUfbyTSGtnIcNA/Ob9O03QyHh0enYWZsjZIHHgFSgRCYCbAMtUDLBBJMj/e77oTL3cqNhpPdl0UdokAAyqRCLDhoO9+6vnw6CyO32VnWt3943mSLBa3V2eP375/0+td3ny9cdfioijqD4ZJMu92Ou5//3r2rNe7/PO3/7n/HY0nLtLcBv3H0zSdTeNHe3vZh2axl31omqZJMu/90nOf6+pxb3GXAf0zQr/OeZL4u3O7WOTOuoaDfn8w3Mx4QwMBBlQSfoD5mfG83/84+9j7pedi4OLiYjSeJMn88dmVH2zuD7mzGRcw7n9dZri3xPG73OOfv3zqdjpZkuXO267PT7IXn5xfuxd8/vLJVZW9JXukWKe/O+4FfmK5zTY3xtAjEGASl2JhXvgB5s6iOp2uO+inafr0yR/xdPa833/7/s0fT57OprH7by7Actnj/69/7pUlX+5x/xE/wLKAcWVkb8nO2KIoctWW1lncnVyABXup0waJA69CiQrjCPPCDzDHP+4PB/0Xr149Pru6+Xpzdfb41asX2fXARgLsv9f/Ztf0inHirgR+nH18fHaVfYq/kUxpnaW7wxnY1kgceBVKVBhHmBd+gM2m8Yu/X6dpuljcXvZ67qTn1+Njd9B//feLi4uLZd855S4hVgywz18+ZXdVlJ4PuauCroDsLdlVR7/y0jpzu8N3YNskceAVKBEIQfgB5t+I4Y7s/m172dHfT5rr8xP3Yv9eDHcTR5UAczdWZNcDi/e1+1/L+cGZu++jtM7Vu8NdiEgJMKCi8ANst7ZzQY+fA4Mv9FUBBGITAVb9F30FG2DuHC67HWPTH8e/xAFfoKvCF+zSRas0G2CRp6lPBxok0XIKJSqMI8xrJMCiMk19OtAgiZZTKFFhHGHemgFWGl0EGIIl0XICJQIhKF3PK2LJz6cqL6uyHQA+VgVQybIAq/4ukgloFosHqGT9AMseIcCARggsHlY4QtBUgPlPEWAIlkRnKpSoMI4wr/EAq/gCYCckOlOhRIVxhHkbCjAgTBKtK1AiEAICDAgNqwuohAADQsPqAiohwIDQCKwuDgEIAQGGVpFoXYUSFcYR5hFgaBWJ1lUoUWEcYR4BhlaRaF2BEoEQEGBAaFhdQCUEGBAaVhdQCQEGhEZgdXEIQAgIMLSKROsqlKgwjjCPAEOrSLSuQokK4wjzCDC0ikTrCpQIhIAAA0LD6gIqIcCA0LC6gEoIMCA0AquLQwBCQIChVSRaV6FEhXGEeQQYWkWidRVKVBhHmEeAoVUkWlegRCAEBBgQGlYXUAkBBoSG1QVUsizAfmj7pQItIbC6OAQgBFX6kF6FGRLNrFCiwjjCPAIMrSLRzAolKowjzCPA0CoSzSxQIhACAgwIDesNqIQAA0LDegMqIcCA0AisNw4KCAEBhlaRaGaFEhXGEeZV+ZEvehVmSDSzQokK44h2ojlhlURvC5QIAEARAQYAkESAAQAkCQSYxKXYEMymca93ebtYVHxqsbg9OzqMomhv71E8nW2rTFNoTlgl0dsKJSqMYwhcSsXxu2JWlQbYcNA/Ob9O03QyHh0enZUmH1ajOWGVRG8rlKgwjiGodQaWJPPj/a478XKnYqPxZHu1WkFzwiqJ3hYoESskybzb6bifQPrr2TP/DKz41O1iMRmP3AXD3FnXcNDvD4a73RcAqIUAE5Y7c/IvId58vSl9qrt/PE+StJBYk/HIXU4EABUEmLDchUE/wHLfhM2m8aO9vU6n69IrLQTYisuPABAmgQCTuBS7E7UCrNe7fP70SXaaxRlYI2hOWCXR2wolKozjTtS9hHi7WFyfn7jc4juwRtCcsEqitxVKVBjHXXHXBktv4ig+ld3Z0R8MuQuxETQnrJLobYESsSH8HBgAaQRYe/EvceRI/JUTQIYVC9zhd3oBWgTWKgcUbMcDfjslzQmrJHpboUSFcYQBD/glyzQnrJLobYUSARG7XitAYyT6WaBEYDvWzyeJNQ+YwXoD7qwOLQIMCA3rDbiz+nyLAANCI7DeOChgO1ZfJyTA0CoSzaxQosI4wjwCDK0i0cwKJSqMI8wjwNAqEs0sUCIQAgIMCA3rDaiEAANCw3oDKiHAgNAIrDcOCggBAYZWkWhmhRIVxhHmEWBoFYlmVihRYRxhHgGGVpFoZoESgRAQYEBoWG9AJQQYEBrWG1AJAQaERmC9cVBACAgwtIpEMyuUqDCOMI8AQ6tINLNCiQrjCPMIMLSKRDMLlAiEgAADQsN6AyohwIDQsN6ASggwIDQC642DAkJQMcA2Zwv7CGQkWk6hRIVxhHm7PQNjFWDLJFpOoUSFcYR5BBhaRaLlBEoEQkCAAaFhVQCVEGBAaFgVQCUEGBAagVXB0kUIjAXYbBr3epe3i0Xdd3X3j+dJ0mwxVSwWt2dHh1EU7e09iqez7RfQNhIHXoUSFcYR5kkHWDGuagVY9uKHxV4jmxoO+ifn12maTsajw6OzdWpAFRIHXoUSFcYR5kkHWNHDAixJ5o/PrhoJsFrvSpL58X7XnXi5U7HRePLgGlCFxIFXoEQgBBIB5p/fuGt9i8Xt1dnjt+/fZI8/2ttzPxntzmNWPOIu1mXX7qIo6g+G7oOGg77/lqyA7PHsQl+SzLudjnvw39f/ZZvq/f57rqROpztPErcLf/72P/cyF1S5s67hoJ9VgjYjwIBKJAIsSea9X3rzJBkO+hcXF6PxxJ0zxfG7Xu/y85dP3U7HRYLLidJH3BbS5Zf7/G/Cnvf7pV+JTcajk/Pr4tlSbpt+Ae4iocuzXG7lEstt/KFjCTsIMKASiQBL0/Tpkz/i6ex5v//2/Zs/njydTWP3317v0sWYy6EVj2QnZLmzoizA3EmVeyr36bnzOX/72Qv8AMsV0N0/zk4W/RfnAmz9r+Jgg0CASVyKhXkqATYc9F+8evX47Orm683V2eNXr16MxpNlcfXf63+zS3PF12RKA6MYY7Np/PNPP7srh8u21kiAcQa2BRIHXoUSFcYR5qkE2Gwa/3p87A73r/9+cXFxEU9n2fW67FaI4aB/eHTmP1K8pudv0797fjaNX/z9Ok3TxeL2stfLbmr3c85t/+brTfESotvUikuIxQDjO7DtkzjwKpSoMI4wTyXA/Bv2suO+nwS5eyiyR1bc1pGm6fX5SXYTh39fRi5I3MtK79HI7shwr1l9E0cuwLgLcfskDrwCJQIhUAmwBwv8uhw/B4YiAgyoZBMB5s5Lmvr0h8nOmUpvyggH/xIHiggwoJJmAyzyNPXpQNsIrAqWLkLQSIBFZZr6dKBBEi2nUKLCOMK8NQOsNLoIMARLouUUSlQYR5hX2ocrYsnPpyovq7IdYGskWk6gRCAEywKs+rtIJqBZLB6gkvUDLHuEAAMaweIBKmkqwLLHCTBgTQKLhxWOEDQbYNVfAOyERGcqlKgwjjBvQwEGhEmidRVKVBhHmEeABY5/qqNZEq0rUCIQAgJs+2r93i/+scQWYnUBlRBgIeOfq28nVhdQCQG2acNB392W6a4But/z4s6lck+53+fifpOL+y2az579xS8MayGB1cUhACEgwLYm+8UuxUuI/lPd/eNPXz6736jJr2xunETrKpSoMI4wjwDbtOIv0swCrPR3bLrTMpdbuQCr9eUZSkm0rkKJCuMI8wiwjXJXAt2XWH5u9XqXcfyu+FSapu4aY2mAcQa2PonWFSgRCAEBtlF+Mg0Hff8MLI7fFZ9Kknnvl97H2Ud370buzkO+A2sJVhdQCQG2adnvhu79/rt/Bna7WOSe+vzlU7fTcfcZTsajTqebJVnKXYhtwuoCKiHAtq/WT3Txc2AtJLC6OAQgBATYNrkb5Wv9mxr8Sxyr1f2XoyVaV6FEhXGEeQQYpNX9JT4SratQosI4wjwCDNKiMqtfv7XaHkygRCAEBBiklQZY9ROyMKnWDWzZOgG2+tgBSNjIulpPiDUBASpdwD9c1WEue7TQ6lgS7eQQa8oJc+DQNgQYpK0+oxLt5BBryglz4NA2BBikrb4SKNrJIdaUE+bAoW0IMEhb3YqinRxiTUCACDAYJtrJIdYEBIgAg2GinRxiTUCACDAYJtrJIdaUE+bAoW0IMBgm2skh1pQT5sChbQgwGCbaySHWlBPmwKFtCDAYJtrJIdYEBIgAg2GinRxiTUCACDAYJtrJIdYEBIgAg2GinRxiTTlhDhzahgCDYaKdHGJNOWEOHNqGAINhop0cYk05YQ4c2mYTAbbiH1cFtokAAyxrMMBW/7vgwPYRYIBljQQYuYUwEWCAZesEWPGUi0d4JKhH/AdL/fAFOxFiTTlhDhzaprQPKy77KgcIYIcIsE0Jc+DQNusEWPZnkgxhIsA2JcyBQ9usH2D+g3Q1gkKAAZY1GGDZUyQZAkGAAZY1HmBAOEQ7OcSagAARYDBMtJNDrCknzIFD2xBgbTCbxr3e5e1i0fiLAxdVsOsaS4RYU06YA4e2IcB27oeBsX6iDAf9/mDYVD3SJFpXoUSFcYR5BFgbPH3yRzydVXwxAbZzAiUCIWhngLlj9J+//a/T6c6TZDaNH+3tRVG0t/fIHeiHg767vnR4dBbH746Pfz3u7rtHRuOJ24J7S7YFt0H/Nf5GbheL4qf4xcTxu+IW0jSdjEfZFpZtcEUNaZomybz3S+/j7GO303HnYbNp/PNPP//z6p9sv/59/d/Z0aF7l+0Ak6C9uoCtWfETXXLfHFTnDv3uEO+O7/MkSb0s6e4fu0ee9/tv37/5+aefXeRMxqNOp+vCIEupk/Nrf4OT8cjFnr+Rj7OPuU/JEiL70NwWii/IbfCHNbgtTMajk/Nrt53u/vGnL58ve714OnMxFk9nk/HIZWpWOQG2W9qrC9iaKlGkHldFfoRk5zFOlk/utCb34iSZH+93/3n1j//27v7x2/dv/Ed6vcvPXz7lNpL7FPd4ev8MzN9CLsCKG/xhDe7P1+cn2dmYO4fLzsPca3J/IMB2TmC92TsoQBEBtuyKWZLMXWD4wVA9wLLXFzdSWswPA2zFBlfUsFjcuvMttyl3QbLNASbRzAolKowjzCPAXCRk5yju2Rd/v07T1B39/bhyF9ncyVDu8l0uPOL4nb+RN+/f5j4lV8wPA2zFBpfV4IdT6n0ZdrzfdZcQCbAwKZSoMI4wr8rXXfZ6tZgQ2fW9LJ/c//YHQ//Z4iVB/waK4iXEbCPFTynmU5VLiKUbXFaDu+/DvdjPafdNXnbGRoCFRqBEABJ2flde7p6OWvwvwKCCAAPQjB0GmDttyt12X+vt2a2PEEKAAQAkCQSYxKVYtBPNCaskeluhRIVxRDvRnLBKorcVSlQYR7QTzQmrJHpboEQAAIoIMACAJAIMACBJIMAkLsWinWhOWCXR2wolKowj2onmhFUSva1QosI4op1oTlgl0dsCJQIAUESAAQAkEWAAAEkEGPBwEt8TAA8g0dsCJQLBkljkwANI9LZAiQCALSPAAADYFAIMACCJAAMASCLAAACSCDAAgCQCDAAgiQADAEgiwAAAkggwAIAkAgwAIIkAAwBIIsAAAJIIMACAJAIMACCJAAMASCLAAACSCDAAgCQCDAAgiQADAEgiwAAAkggwAIAkAgwAIIkAAwBI+j+xZFUHHtK6xwAAAABJRU5ErkJggg==
总结
在实例化MVC模式的过程中，三个角色可以对应到不同语言实现的对象或模块，其中的消息请求与响应可以对应到内部模块调用或者http消息
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