Processing after vue gets the base64-bit image on the server

Table of contents

What is Base64?

Can Base64 be transmitted in Url?

`` Is Base64 an encryption algorithm?

What are the application scenarios of Base64?

Advantages of Base64

Disadvantages of Base64

Analysis of the reasons why img in vue cannot display base64-bit images:

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What is Base64?

Base64 is a way to represent binary data based on 64 printable characters.
Base64 encoding is to convert binary into printable characters. Base64 encoding is unreadable and needs to be decoded before reading.

Can Base64 be transmitted in Url?

The standard Base64 is not suitable for direct transmission in the url, because the Base64 characters contain characters (+ / =) and the URL encoder will change to the form of %XX, so the decoding may be wrong after the URL is passed, so the Base64 must be transmitted in the
URL The value must replace + / =

Is Base64 an encryption algorithm?

It is an encoding method, not an encryption algorithm. It is not readable, but it does not mean that this encoding is encrypted. Encryption needs to ensure that people without the key cannot decrypt the information, let alone decipher the plaintext information of the task from the ciphertext, but Base64 can easily reverse the encoding.
In addition, it does not use the security that the key does not have the encryption algorithm.

What are the application scenarios of Base64?

To transmit some slightly sensitive information, you don’t need to encrypt it, and use Base64 simple encoding, which is safe for naked eyes

When some transmissions do not support invisible characters, Base64 can be converted into printable characters for transmission

Can be used to store pictures. But it takes up a lot of space, so it is not recommended to use

Advantages of Base64

• Binary data can be converted into printable characters for easy character transmission
• The data can be simply encrypted, and the transmission is safe to the naked eye;
• Picture display: After converting the picture to Base64 encoding, you can directly embed the encoded string into HTML or CSS, thus avoiding additional network requests and speeding up page loading.
• Data transmission: In some scenarios where binary data needs to be transmitted, such as WebSocket communication, AJAX request, etc., the binary data can be converted into Base64 encoding and then transmitted.
• Data storage: In some specific scenarios, such as browser local storage (localStorage, IndexedDB) or cookies, only text data can be stored, so binary data needs to be converted to Base64 encoding for storage.

Disadvantages of Base64

The volume of data after encoding will become larger
The encoding and decoding process requires additional workload
 

Analysis of the reasons why bit pictures imgcannot be displayed in vue :base64

(1) The return is not base64-bit data, needless to say.
(2) If the data returned by the server is indeed base64bit data, check in detail whether it conforms to the standard base64format

In one experience, the server did return base64bit data as follows:

"iVBORw0KGgoAAAANSUhEUgAAASwAAAEsCAMAAABOo35HAAAATlBMVEVHcEwHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZAHMZCLZ3uoAAAAGXRSTlMAoC7SDyHxQt++gPlgr5JRGG7oyDgECIh3e0H8IQAAHfxJREFUeAHslYeS4rwShVGWrGRZctD7v+hVsAkDNmEx/LeKrq0aZtZYra9Pn3P41a9+9atf/epXv/rVr371q1/96le/+tWvfvWrX/3qV7/61a9+9atf/epXv/rVr371q1/96le/+tWvfvWrX/3qV7/61a9+9atf/epXv/rVr371q1/96le/+tX/WbXtd87tMR6+ffdnO7aT+tbRSsH/J1wttMKb75zdYy1GRvC3GTxcCtAIvqSsw2FEko7w2wweK0wA6mR0X2uX6Si5Nm3/bRL3CzqTUEXEvrYI7UhjpHxkX4qYxwtOPuZqyPd6UCh3QIH9r9MCXWEVyRcDCY6lBSnct2ls1WDLCqapin9jNfyT32CGaOmCT1/U972ygNeZIvsPb+kH5uw/xQOZah8RufBtJqtl5h6p+Bd3H7BBWv1LHxhW44xRTN9mclmTmS8GF7+K7l90ASty/U9hpsTcCp99i5jpPyAyJnQ1BjhVv4oRhJeFheEkeHlN54HCL1tX62ZaksPSDGa6+XY49lh7UMwcu1n6HWIvsuoxc6B6c75mJxr2cqhCu4zOwIx8aLVQX4Y1EKqrLRAzXxKB11/WoHhedLSvanTAC3U6zw4g/WVYUMemesFiWOLVIITL5pyXpI19cXvwEjd+LL9bwRvyTVZEdbQMHzNfVW8WX4aMPW45LVPAc3oNK3kO0qN9/JKY2GpSh55MlT4VJW8IkNz+S0r/a1kTeREWafIYZYeOOgh2tAyS9q7p4JakZwG/QWreI29UgATfe1Of38SUOVpmmBDNI0TFrPAoo/umtHQXQRlbKBFGDTv+F1HJ60VzXxRQjWgV1FFfemL33oQTKE4lDac/KZ/VSkX5xfHXPeINpdItVZYSHHMM6nA+/DBrhQowKXZDYYTZRqNbu7dSXJuGwWsLayFrjJ6Jd3V6x/0uq1i+xHRyie9JKwkrhix65aMUDl44QvL+2aM7jpAXAphUjVP5hwFCeIR4R+eAf6RkxznyXuj8gtGpacwv0sL79KJupo7UOc0eQ5NEP2bFh5TXovkSqn7IsiBJMoPj1E/VRo/AyPhXGCiV0CD/QPwJSH+ryy/wGmTcCdPlf6KjZSUPyz8sQFRn14JNFueXYGGSmytcDBXzChq47Ftr4zdKHDO4Za5OzSI65Z8uy/xLsIJbYKlmqn9ijTg6Ro+/wYqbU4OOl5XsewxyDA5levba8z5RFuSYKoxYTSAyCXfqZeieMO93FZrOGjS6hvFgQ2qrZ/mB6TsWn6J4TuW22MQAneZtf3pA8M/DEvZ0PgkUzMPrszkUWBp+BVbyyxlWLQi6y7Ax/vOwwAULQbk7/VZg8fANVsRcwGqV7rrxolWlPw9rxGcN9MxTPgZ8Dkuyb8Bi+gRrIHYUNAI2nD8RwMdZddNFj7gREYGJDf0RVrT4o5h6jBMUe4TVE+YSKor+9NGO8tOwvLpsNbguhRBgIXtphZWDEeP+U7AwDOlAJWZYPa7mhNTfVJ4+HofA/mkBFnVToRKeE6zAPiYvAqZwggWV4BkKN+3fcamPx+H015EGyJO8JUWa4UDlDMuN6lPCsryBM6xOMyPKsnFzHTNWfBqWhVdNOJ9HKalWCtEFFhDDZ2C1qhxYYHFjZvUIe/0k+7jDM3I9WzB3qCexwLKGfsi1kl6y2AssOTfSgeuRJsMYH73jnXKPShTfEAxmqP6n5MsaQhdd+wlWw9TxsMCKNe/QCG/JmkyP3vFO2cckKuktufSY+TrT0mxJQxs9/AQsCKiAR1ilB92Em4+mnh6rP9+zU9Nc5NWD+0zRynztiI4PZViH0FH7iUC0otMXsCRVa1Nir8ECXYwNeQGWWGv67AUVFoqKfAAW6Hi5SND1cA7WT61h/SQsWPXInofVgdVOMCvuvsCCImq3O6oeCznDqhcANtkVZO3NcAl+7vAZWGF6FRYfb4OCgfQ4NL48VNYP6jTk3WENxMcKC6YLSIpUShVs3W1YULwAizUvw5puwwoT6w8DMyUN08cUPSZSPewNq7XoDBb1tjAx+vbTMLvP52Ahu6Is2mQ5tY4v7yXpDL+7aRHDz2C56uxI3B5p6om/Ckufh8ajsNhK10uDTC+wTHpa7Q0L6u4EC4QyMEXBSpft9DIs1z4Py6+l8igEy61i5yus5FlrS/tOWMmy+VhhyexXyRGANCuKbhV6HlY1+OLDz8JqV7q2mo8wexUbq2fBZPbc7A0rJJPsyoqQkdeLjJGvpTBmL8CCKv+JvQBLrHWNR0nrZEmdQkh9UbE3LJZ6kjyc/pC148I7YRH2dlgHKyI9kz+28WOwKFtSF2cPk2wtV4Ys94/B6vRq29BE6V3bL0eoj8GKUc3mgMOYDkW4X3m6x+KDsNC6CWFLpUSKzI3a8YOwTN27PvlVMspm4/n/CKweChpn30o1iQ/C8qr+onlaSh/eCKvHgVVYjTEqtG+CVXNZIlcNA3SfgSVzW3RKptVmv0rgDN6CJZ+BhYNqwFRhCc4FGFWLH4YlNiQ+EE3zYE32LejlR2CFrtw+JUvdwShHu/V8bvFBWJgEZTyVoMDK4Z79UOV9fAyWdluduJw1dRNVfffusPLu577UoR3LJ8q2hHUw/GFYsOFlEBUWWXJUs0dhAbXVSWvKQzwleVOa6sDusMrqRTGlSZWrjWQtCp+ENenKaoY1qFHQ/IdOM/wOWL0q/ilTONU7bAbTvxbGyajIWG6PACwLJjncFNbDsDBE5QaSaldgHQi0jc9/6zR8B6wDnAp85FpfdgJl/xjypXaoNntt68rtuXhw7x+F1ar6SXIV2CI2bPIhkrK3wBpYla6BqMJK+93jdnvYr9YIkm4xLF7CRTmYCvImWIFHmmTUAdyTI6xskeV60ztgHTArA+a6Pp7nTJqG7QNLJ1g9rutXFJ3aG94DCzoZZfoHWH84h9Xa/FmPb4HV4ybTykPJwjJ5GADYXWBpXxxxPF3f23vCOsGiHV+vg8o0ZAdsWopzWH1bzjHjxpfr3FKNd0UCz2aXAj0rV+8DS9T4cEump/W4y+oEq0NivQ5jfilFmdUFrMOhimDa+PIcojE6eLedmogntFAItScsYo7Xz7+ybYc8wgKbY093oEvb57AGUkSw+d2GPwSrhem/B3zUYRkMFN7tA6sDpf+pZEnylyJgvb2KRx1uwrJajyy0863CCRZpioLDG2DZKQ+jr2meVjv06dfgu2kPVljQnB9JyvU45PLlBq42WzzqfgNWMt5xYrhfDiJHWITlr8uJvAOWGfMPWAIq9VPeGbhs9oDFEC17d2A1ehtY18T9MyzMdLjY5SMsl4+SlA1vgMWAPu9IFR2njd8J1nyDVuXDROmsdXX3/wnWVUUEmqSqplo3d/N+/hssCJAtL6qLWIScr7IbLJhP61mXLlEPhj6yfutbI3oBlmqM0QLNrEw7vAcWH8vqseSD1Jeu4bgTrJCubUs7wVNJSb4BTty2ITyYhsfqMYFBjUB0NbUkAvey/TFYPTFUFFMnTMaaVWk1d4JFUq6ZcmNieFftC7rIw1thYTb66sCVFbebcnlCWYckqNkyqER1AtbvBOuQ3IeWnG0tEvUIg2bvehOswaETqBS4zbYh/oFl7D1Yoj6hO18WkpgYO7cXLGnyIRh6XY4guov6fbB6rNILc9GOCw1Gx8i2XV3CurOwrktZUeAbLspPm8KW7wNLJxcRpR+s6z6q1GbB9x5YLfPpCEk58kIrBvFjfT0KS/mlC6dN/jHopGOvdoEFUlNU13NtQZTjqnkfLCiyW1HRWOWemPejsGxaDVT6ZzY3MxCa+vd2F1hjmkxyxjZ9bHOaQ5UDy7bvgtXa1LzkLhDEvX4/rBx9sst6xW0WLWly/5rtAsvpMvcw2whWaVIxwuFdsGBy4Mgn0h/SD/F+WHAsKbBsQoqp/PsId4HF8mGSuvk0CNLSSIr7bVjdw7DK5EWb3rcPrFblh7olYK0pX1Lbm/FqkXLYccmnPBiK7nxJ06dgdSB/2gfWgV00MgfvPlvYD6y8nlYhtwVDvdxGCfmksvDryhLT9oMB5Za5K9JSKHdG/T5bmNOqSqsklSobz++lVv3KQ7BC3gvuXvcsP24/SIonyNLJUJI38pHsBIvULaclqUCRGbLvg0WywVPEhldhIXPnAFeeFE1aE0yL5NFOlpWmQeamVDvgM25vgjWvCdVqJ1gD8aVpntOpfEPqnVDl03zpiwpI7EPCn9t7EFZrfQ5YMXXyNVj3DHTIAR6lJJjV76BpP1iHqQhFUmvzysRo7mwhDugJWH2rQLqEaBDlgikFn4R1X+clwWO0zJUllCDsCItV9Ubn6gd35z6YPQMrPW/TNEQjEqzGC/UkrHhXjra6gnOz+zZ4R1jLaUKXn/zeYJ6FlRdXOZVh5QAR8M2w8FgXQtSvNGxPVodWlRThvEC4m7utehbWYWjbNsPSCRYd2VOw/N1oU2XIvsuXkJzsKqxDXxNL0q7sfm6OwPUjycSfhZUrwxrz9PX0HKx1JQ5tIcOKtAqr2O0YhfP13bG1GHGf/mI2MJDmZVjlXg9F++kMtH5G64pKCTt1j3ZbQgjcrPFx2SxUb2J0sw7LvA7rEOgDLvQoLKjnleZyaWjODwsa8mZYZFw0Ds18nKg7YgTYaLF7DVYaBGtklM/B4m71oYCELR/A3BEvHpL2s/H2rtU9C2vqWPWmwc3SAvPpfv1G0NPlItqS9frzNY20gZNON5rnkBxnvU7q5esaD51X52glmGdPDArv9nlso1te72prYz1Dd3xjnkdYCDTr9edrZnJK0LNVIXbjy+J4xjqswUZU38XKqCUlQ/0fK/zy8W01kIjM4dy2F82nMF791pmdbtblXAiYjUUsM2fgodes51sa8Awr95tGV7fi0GO9Qyj2mHZ6lhZmeZjz4TgdTlZ03L8CKziDaILFPVCkfw7WqiGQJnbzcHXqnS9L2DLP1y339UKUT3PvhyZpeTZM6GNkK3GSdvdZWH2b0lZ2HAmzrP3jsKhfaz6YZBu1++TwclnvHoIOTTvAAp2keN5uYo7xZtE6rMXdnoDVqvQ+qid78aIHYUm61nx+gamhl/KAzlmVTjsO/b2VbiHN/OLBggVW9q9VWNPTsMjEaTeCUb0CK8otWDqUjxOK47zeWCUPAWQHWNDLyE09sCdMjnVLdBejhbe/ksX/PKwOGQ/cS7BW3TO/QNQBpJyF9anBJf/qJrwDrANIGuIGlk0csLBF1UMOLgXXW3x+DbkQVDSvvWhN4/kFfKwfxxp/PWac7rSFh4PTqZtuyRFclDyQ3OIaLCuehjUQgf4Blt0Ym6yQ0qDnTE/umGwf7gILZruWHWBFW3Xrs0Ouz1P5p2ElO5yM4aIhwyuwprChcR8qptJ626QdTNexu2zhMgoObFVVAQi2YLnueVgHDFmTYBkVXoBlVpaqvIBPxz77dkT0fFHeXpVMOuA09YC2YDXxBVglYUUTtXsBlt6CdUYGQ5q8Nkak2p1gDaSeIOlyRGvjBixi/gGW4Ug9Dwu5lTmPpe9FrGzMsoqR6p1QZVqgCClKNLL50PJ7e3vvA/gHWMQZ8TwsOt3unEyl73nIVucM3xDiW4qZOhGJNMyASkDGOPQ3n1b6H2AdiAVt/yysaG7PrQZRjT5oRb1FRNNeS1jK8aWrMqTR37rr8c7iX2ClC8Ll5k/Auu0IuPoFyAthjy8DeworX6Da1jwlkNlRsfLwvLSvwjqrx2HpcLsXVv7XJzpqGaHkeNgVVk+mRVu8IQedyXXFJVur/j78D8rS6jVY1MA/DeOqtVBcKmUGW3ZQItXvyiqdHfR8WNSqLzQ6U2C5sf1zuDX8VVh/FuRRWFK4Py6EoS/4oM9tI4XHpScEyL6sCoKjjCkuH3ldmcmrv3ZZAvs1WOwVWJLCvy0Qg8piQt1lQBM8PtyE/Vmd0YqlgYiqCqym7K8HYObl52BxcBWFrY1Va6TJikL+aKNq1yA8S5Zl7btCAtWLBSPHP4aRttaC7lOwhIJXJqRAZIVg9VpK5875lWfsVe3kF98qsKqeYRO1veqgVbq7L643wKJ8IlfhNow+1r+26jyauWafQZXL+bOTfTXKVkXaXO3BYQj6vrbeAIu7G30Sv7wbs3NY4wdZJRmpM/kvN0ofb3V8UOJJWO5pWNTBWyeDjoorWJKy65nuWS08bdcCK3QS6ZtkHZBPwQrGkWdgUd6EG37dD4hew6LCXO/rHoXJ8RIB8Nm4xDyn4Cnt8C3fbKHgm7jYn5rU5e9uU5udMDePxTD9H/gDi4rjIPqwayLCyRw/k2Y+fk7DA8whCW8rHBt+13VeLrDiQMElK2vmedm5WxEWWfUYuT1hYSemZS4DYTUUj7Cyk0+X+7PUQJShcg9StHNhxYKyVx5hTWVaSJ+mSYxQe8I6WI3sot1hsCCPC81HEpNgCbjyzTYYRN/PioNpzYH6qTvBKs1J0ZxEGCY+hV1hkUkCe5xNzxokI59XkzRpeB3rV7/b6HfvIkVmPdlaE4+w+uwRnVAn3RPjKdzVsw4Do1KfWURrqVwCp8CKaqMB0ryXlfR24zSmT7AOgUopzg214Uvfu1VPRt7p0zT7VqV4rllUYY1wAzVR7xSXmEK7quNDny1rgUWc7Ew4ZWbruET7OlYqnPTc6bOBtk7Pcq6w1qJpUeIk5FuMXnKgYL911ohOsGCTWJ2eDs5HrsnesA4HkJzSnDkjUZyREyxht7/euvekIhXrbnVq9AQLsbMcmJLo/Lg/qwMEqQek8dVUKyzu7r0AW/HPsqLNpoBLlVMWzzofF8yxTO2+7j7fNXuBvEiWhWIepZzyM8Gtt9K3waVs+ofywJINWQWbrYz4m7AGm2IwaXsk/QdgJbPs0mFSGHeeLgmWzrDiiIuzubD+hoHYUby6jdmstjZwsGOTZc/QNayesKZEDEXwzhK/q0KWcTqQq/YGLJMU12Oup61X9LDhchez6jHwJn+wN2Bh1tQZdeAzqHI/Yr5o5xty9M3qWXMcMnS3H/XKLnIHt98KRTeWGdZuzmC1FiwD4uBDusq0mK73lJR70LBq9jMsrfIv2PhObd+rDQw8J69OjKHdviYzVNvSzli6QWrePztq1C2sFPyIYdUibtFWOlmMLGR9zbBE3T8FIlDbF+uxAv5hXJIiPd3LQOK8HOuMStxEZPM5MKhk68cXATh8jlWO33N/pmJKtFpXYVXhtzaJ7G6+H03kAVkhdT/sjZd0Tpa65Ci1gCFAFy/CH9RVvWad3LG0bef8EfUBqFPGP5I5rCpym5RW5IERqnS8mR+skhWYNOLiVcJ+zq+W6qHTF9fxJvgiM1QfIFP6rMPdIfaYBKfR1v6JxsL2/uZglhpAS1bW1BNW8LMckdSw9tO6yhUc6s76oF6VG9OuNpP3UHYPrE4q6Izn3c197DjSzQLgTkNTasfXeB5wNVQ/XvgFErb9Aqpc7MILUi+1r2oJAynbyR571UCc7m7B0uODb0iGlbqRun4mrHZEL1fQkS+hytWqG2m2DK/oH8CHX4bhJC6AoVE9cbmSL9zUX1hz1RYH7PNudXk/B/Rff3YzLJRvLtTDL+vboCaj89ekREIbx+Dj1xuKMtFUf7PgsiealtmS+763c0FrPLrwm0VMxbU78FRQD8Q2QHihRxuecpcBFhMQtvzWuzODkDT53sS+ZVZ/ilhzvo081D/XzEbPix+HtH1PZhape6fr2Xi8UJX78gKe19CSoIxfcke6Ki2nS5w94Vpz9fj5fYH+XNVWL6rq9JQ0ip9Ev3Ph5DfAV/EDddax5OwDVkFUzb2xSGgYq4+i7HvkP6Kq/nJgQY2eJ31xUPwBmtnw70ZaSwiEbXpZjyEk+ct9+gPsk2bTj/YB2LaeRYu/D1DIpCkkJna5z/03BdZemSaZRBoxqjY7x7dmd6+aTB2o9DLMgBjTlwfcaJGioXVaAwfv02rqFiJX/SsJi5tro2q/KDIItPrzp4EEBnjnyy+uLgNX916EeEc7Px6Y8bzjKEAnOOddQwLvui5d+94LsK5bCPKUsOXUm0D+GFVPJu2+R4sALxz8o65+YJMB5eNss3S8l9oeGBOlHkbEjeaxcVp6A2KiBhqAIrpLO1SzjC6H4RD0qMKNyEZCfcA+1yrlHVLXYdfCuoZhNi1zLw+TDEiMAgvpk6iiToBMsDEyzA5Mz060VWqGZctJrSLXUFgS3wi/xyovYhKOYCsOjm29AgJ3X4RZlIL4KPIrheCJU+DRMdaY9Ed77+uobKGkq3026Qmk7il830q5QyVFwlh4ww36kN0+4eT4TgxB5SNqAupAhuULLOijsy65GW3uCAKTFMGpuptDIcxpkUJauPabYZjLppWJkgswOmUZg4SQU09tXQ8p2baxwlFI0bCAqD7BSj7kmAUayXtxGlwRsPSn53DqAwZmrWqM9pmld+TLqFIpUHdNdglYo1gCdiQzkJrosSF3LceFrKU/axiyLGLntluwtQUqTiMhqQ/rEihRG4hf9qulWlWX4KKEBk22MldpUbYRQwNJ9yxXEdGTZPBgMXibkiIbn9k0G7LkSHoYqkZ7ftUO1XBb25+qvrXmqj3adRwJPTrQFdmBjU1qVbJmL4Q5jJwK1FFrdeQeRWAVEgJFrzbNpqlRiBo3Co+SyV3Nzo8Bf9uvjrdNxkWvppk30xtdYEXk1sXRKl4KHJTmHfcC5vDiyCumOE3QzaZnEV3PRsDMS/+nC4rGLWF/YRW9vNXoqbRa/TJmTSmVPhlhchhAK3TyuTY0QhtFNq96LevL6gT7Np7rGxu+xUvSfVwDqk1Skqv222iuq8ckOOBveP3StrA7tB0M2piPaFRo/ytmdUErT3nUtx22eP5o362tvk3ZefOsbHVCTzmQ/8O1kt3lBgK++bBWreiKC+DYf3D/bhcJrNi20Sn7l6SU9MpACFPTqEXBS4XQo1qsjQRlkk7L1X36D6euTC+YEx2fvmyaZlKM1ef+1155rjXPK1EUSVbvtly4/xs9I5lACA4p73lI/GXWTxLL0Wb2mh3RJc4lEKNzeYHQiNdQUPI1WxPkmZf699bcJuNanWCyLDJm+GRQqm8jCZ2CvAIEJulXsUanRc2RQEjZORejlIVy/pSWugVeSh0h38Iau0QLxOE396fofSC63/qoZzBhkFeaWtzO14ErZTd9u4eOZq9+3fi/omf33N7+/wVVFlCROh0c23tiMtRy+BRcr5ecoY3D6XcFlBLkxqdH3+Wf4TGXtG1YKF/Ms2dKnM4KIwFERakLWlmhPCFaWMFIjrTpS/+YQ6F0MGCwbttPHZV5B54vQQUXC0/d9N33YCk3DxsqAkkvoJ2xo5EoC1oKEr4Li1AIP0sOV+YusI0HLfMmyvqqo1jG9ioH/5P4/CrjBra9YMHJY6/IaMimzYFhbt/sJKkKJ/Lj5tRpyEMY+fHhGcn1DIaSHs9UNG1x6PL8Ne249D1UidVlT0LFa82Y2lxvcNdcqnw6qYf+XZH4WSwobR6EVcMMfapjZzZPgFeBwrT2h1cN7VWM7KCF0INJzn61ku1VxZ7da8qb5ukuLt6C45fy7YbczfrdKpIpBAjZESbOnVQzq69q77LKZ/noHK6Ni2Z1af2vaLd2lQforh3cD8tw04rq1gzPdvHUgnoHvjqyrDk/BAfYqiOYmSyqY/LmBamBgOxwuL3zF/MSfi9TdUiLS0fE+f5ZFmBjtnlJuaq/JzSNWyd13GlRN8Yq/kRl1v35gwUjbhe2+h5XkiborfkSavCzK6vIE51B7FaHs9Mwpljbp8iypjnxuMyebQUmGBwst0N/drqy+H7D6nr+UgqPdf7EUn47KOqW8efEwLT5rX9D7yN99KX/KTDqDOzzVVJahxz58cd5aJvsUnHo0iodysnJRMNY1gO0J0burn0/00qcUiorhVKe0nT0Eanz0evYXWjOxB2DtHo/H30TTua0lI+TKe92Wb8rmWgEs8PyMpf3/MTrFnhXgzwK+5XgoWmHXVefw7e/1/hFSI41J7Nr25No85bQu3b4XZS5rbM+yGtNM3bNW1YM/wGT3wTPbUFa7W64OHirbdW5pEf//j9laR18F+6ma/PQnnoP8dG//w/pZMvKCnpjoahbM9YvZPmJz1U/zKfxtgcT1WA66/NLWYsaZkHutz/oBiF0fC1nvSUnyB1Zvb0Zzfj06F//x4w80ru6RIt8tawgrW6877np9bJCEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBEARBkKfhf/8OSyXFYLn5AAAAAElFTkSuQmCC"

At first glance, it is really base64bit data, and the value is also given to the imgattribute src, but why is it still not displayed normally?
In fact, the above is not a standard base64format. The standard format should be like this: the data returned by the server data:image/png;base64,at the beginning +, so that's fine. The standards are as follows:
 

data:image/png;base64,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

An example of splicing is as follows:
realBase64='data:image/png;base64,'+data.FileForBase64;