im获取event.body中的表单数据,如下所示
{profileImage:'------WebKitFormBoundaryt2NUqsKdknDPfBB\r\n内容处置:表单数据;name="profileImage"\\r\n\r\n数据:image/jpeg;底座64,/9j/4AAQSkZJRgABAQAAAQABAAD/2wCEAAkGBxISEhUTethIWFRUFRYWFhUWFxUXFxUVFRUFhUVFRcYHSgGBolHRUXITEhJSktLi4uFx8zODMtNytLisBCgoKDg0OGxAQGy0fHyUtMS0tLS0tLS01tLS0t LS0tls0tLS00tLS0Tls0tls00tLS01lLS0tLs0tLS08tLf/AABEIcBdgMBIgACEQEDEQH/xAAbAABBQEBAAAAAAAAAAAEAAIDBQYBB//EA EMQAAIBAgQEAYCCAMIAgMAAAECEQADBBIhMQUTIkEGMlEjYXGBkaEUsTNCUnLB0eHwJHOzBxU0Q1NigrKS8SWD0v/EABkBAAMBAEAAAAAAAAAAAAAAAECAwAEBf/EAC0RAAICAAQFAwQCAwEAAAAAAAABAhEDEiExIjJBcYETI2EzQpHwUdEEwfGx/9oADAMBAAIRAxEAPwDNWkqUW67bSPLWvYOKyNbdcuWZopRTslFAZVNhz6VwWqsrluouVV4sjLQFFupOTRC26nS3RFsFmCzVgtinjD0LNTK8WakWzRxw5FdFitZqYOgjtT4NFLh6lFikdDaglu3RCWZohEjtUwiKRsdAqQ2akze6umaWmbMgRlYU5ffRZ tyKjSySdBR0UDbQgdB6TUXJnYVaLge7GB/feiLaAeVY95/uTUJf5MY7alY4E5b6F2FIMER8feAR9iPrTuRW14xheZZw6wM3KzA7TlVJGvu/IVRfhYJB3BI+YMU2HjqcbExMLI6KprdN5NRTORVUyTK9bnELYmiVsVIFrNmTADbrgtEbNdFqtYAEWalXD0WLVOCVrMmDtYqBrNWfL0pow9BOjS1K3k0uRVsMOKRsjnFysqerXPw9WvIrvIrZgUVP4ekcPVt+HrhsVswaZTnD1G2Hq7OHpjYatmNlKjsNUD4er9NUD4ahmDRQvYod7FX1zDULDsUjY6RRvYpVYvYpVMoCKBTqjC09Qa6lEDkSKacWril26W1T0hHJ 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 Jj40DgbgaACdNyB/Op4s+FophQ40wIqF1P1O/wAJP5U0sew+Z0/r9qkYKuug953Puk6mmFidh9dP6/auI7jT3WixYzEwUtrA2kskNr9Pmd9KqL17lsyZ8zJcLIQIyhgtxrZkk6wfgyfAWmIaLOHzZiClsQugkvbh/l6TsT7qpeJ4ZObfuK5LZrassQEYWlI9+qke7U9xoJcjF6mbx/im9eZnRciyGYWwWhZliWI9AdRFXnBONLbsuAucZg6mBoWUCfpH3rz/hmPum1dCJKlOqTAUEESRuTrVpYuXWtqEPLEAGepmgAAjTTvt9arBt76k5JK6pFs2JN3EM7EiUJMNl0GUCTpHbvWr8MOk2gpE+12M/8AUIk/SsPvDS4V5fpy57yN9ffW 68NFQbKrGnO8olR+kIgjQ/zoz5PIIXn8D8OGm/M5Dc6ZmJVnzQO25n1qQW6XD1zXLzaasukjMIzBSw3AOsVYC3VoSpEJxuTARvKo7JXCtPmEyAfKpwSistrXbqL5mA+ev0oZgqBFlpwShb3Fra7Sft+ev2qbh2K5oJiIMd/T30vqJukP6bWrJctdy1JSNGwURZKaVqY1GawSJqYRUxFNIo2LRGRTGFTFaaVrWagVxQt0Ue6VBct1rBTKq6tKirlqWDTMhbSirduu2rVF27NdWY56FaSiFSnW7VTpaoWHUjVfdUvL9wp626mRawCAW6cLVFkT2p4t0uYOUECU8W6K5dDWsUHuizbUs8TJDKiztmeO86QDNBzSGWG3sofuni3UhKyq4yszZYkMN4k Ebjv/AU7i1h7aSDHUBm1IjWdiIpPVjddRvSktWcWngUB4ltM2Fw+V8s27rORMsEwDHx71BguO4q2q28Zh1e04Y4EWQVNvfKl9GM6/tKSPdUfXW9FvR6WXCilkqfAILtWGhgTqCGnYgjaum2RoRTwxIy2JyhJbjESpFWuqlOC0WZFP4mulLaRoWuBZ00lWM9WnaqvD30cgK8kJ1wZ1zvu3wy7UX45Hsbek+2XSJnoftVBwGTduyCui6SJ2EbVHEXDZ0YT18F0wVfQT9T/E0wsew+un9ftTjlX0E/U/xNNLHsPrp/X7VznQaPEXItYfMCRkQJy6vbh/iJ2+PuNZi49q6+IvITmN0WriE+VruoradQpIP7w9Z02JMWsPm UkZLYIk5dXtw3xH8/Way2IwVtGuXEObm3bmZhOkO0qROhBmffrsRQfIxPuXc864WH5TUCBmnUneAJq6s2WW1JfIoXUISqkECMzEn3+7WqPAW5tPLsIA0GgY67mrG8E2zefXLKjKZgwNFUARp+0KeAst2W/CVtKRJUoFfUnMJzDbeflW68NYpWNpVkxzdYgahysT8RWI8Yu2kHaVMDJLHrGuUHT4z33rS+HOL2/xdq2VcM2YdQAibbZZ17/AMaaT4PIsV7ngvuC/pL8NMARB0AzAGdjt29atstVXBNbuI3zZ9doiWiO/pPxq5C0yYjWry1NlrmWjYKKnxBe5eHuP6Bdve6j+NZV8RqBnEk+WQDEfCTWk8a6YK7/wDr/wBVKylsIAu S2y6+bLlG22sGto0+w6tV3DgfQfaPzq78PglW/e/hVGJ9w+9FW+N28LabO3W5ItLlJDMFGmg0Esu571KDplZq0aYiorhRLEAe+14U8S3Llm4+LhXF0hVC5YTIhAC7nUtVX4g8StcuIqCFUMRO5aAJPwE6e+rZtJZNaNdd4kg9T8oH3oldQD6gH61kHuKVBGYt1IYAbJbT6VrsZRD6qp+oFHVPUVpVodK1 winmuU1i0RkVyKfSisaiFhULiiWWo3FYFAFwUqmuLSrBozFlaNsgVDZt0dZt10HPqOtgelToDTrQWQsitsO5ogIsxIDb5e8fDftS547DZZbkMe6nolTZKcEo2lQ1bdPRZMDUxMDeBuYp6pTeEuPxm2yET/AOIJ+evx0qWJLKrK4cczoDx2MNt XYKSLaZ2IEnYCjuZA+tG2b2ZbbTqXt7af8wCKquKcRW+l+4rZGNsKEOQglSeo9yNj28p99WuGnl25/6lvXX/AKojtSW2WSpGdwZH4q4VvNd9uJDMWFnqMW10gRqIHprQt7xC16/fsOuZEclAFJYG22QgxoV1J6v6UeM34hsyhPbaZWzczq850G4gxvrrWT4OznH4oKV812Zk6c8bBSJNQWuIij+mzTcc4jh7uGw66sVS8MgDSH6MpIG40J9NKrcCi5WOGxMALHE4Z8zBH73bYeHtxOrCV2Bquct0RExcmZiJExRfEHV7ac7Dm2yg8nEJ7RXWD0ORDW2M95HuG9RUuBsL5kje+HLg5KkGRlX09+krppVlcgj4UfD+VZHAYl0S2Yynyny lrJGUht4JjQ+mvpVzhuJhtGhT69v79xqDxUsStmWWG/TvcOC/37jtXQtdwuqiSW7SY7GI2G23rprNTZa9PMcFGZ8ZqeXZy5Z56xmkLOR941is7wywRib6swYgJJUFBqqnQTPf11rT+NVHKsyxUfiElgQpAyPJDHRfjWS8P5GxOJCPNCUDnLk9C5padequaSb0K4a1Lw5V00HuG5+Q3qMsewPz0H8/tl27bt6FlX3SB9qr7/GLY8uZvgIH31+1c7kludKTZsb5izYJWZS2pEnL1Pb6h6sO3z9azGMVAHNogqcRdz6AMLmYhlYeogfEZT3r4PEh8YYLrltqQToAxTUdifT+uua4gE6ikj292VYQ2fMc0+o2IpoQaDdwtE5K/5PMIEyNmMD Lqd9dgN+1XlnFLbRBka5cKyCoViNds+pHwiqbDOAjAKSYGyzA1nXt2+lW1jiLjaVLSZ5GpBYAERuInvuDVYCyW4R4dxjri7jNbuZjajIozMOq3EzAGg3NWVi6xxqMVKGNmIzCLbQdNB2NV3hLF3ExjlrZd2tEQUy6dVszNzYQN6ucUH/HoXQISGOUNBHUSY36ZoYj9t9wQXueDceHmMvzvmkt8lu3a
我想在数据的开始和结束处删除它。------WebKitFormBoundaryt2NUqsKdknDPFBB\r\n内容处置:表单数据;name="profileImage"\r
var text = `Your_Event_Data`
var newText = ''
newText = text.substring(text.indexOf('form-data')+9,text.length)
console.log(newText.indexOf('data'))
newText = newText.substring(newText.indexOf('data'),newText.length)
newText = newText.substring(0,newText.indexOf('WebKitFormBoundary')-7)